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105525231201 = 32131168177213
BaseRepresentation
bin110001001000111001…
…0110011111001100001
3101002101020100011120100
41202101302303321201
53212103424344301
6120251055533013
710424004444165
oct1422162637141
9332336304510
10105525231201
1140831273085
121855022a169
139c49418910
145170ba4ca5
152b29340286
hex1891cb3e61

105525231201 has 24 divisors (see below), whose sum is σ = 164166538536. Its totient is φ = 64932203520.

The previous prime is 105525231181. The next prime is 105525231209. The reversal of 105525231201 is 102132525501.

105525231201 is a `hidden beast` number, since 10 + 5 + 5 + 2 + 523 + 120 + 1 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 25548825600 + 79976405601 = 159840^2 + 282801^2 .

It is not a de Polignac number, because 105525231201 - 26 = 105525231137 is a prime.

It is a super-2 number, since 2×1055252312012 (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105525231209) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1328071 + ... + 1405283.

It is an arithmetic number, because the mean of its divisors is an integer number (6840272439).

Almost surely, 2105525231201 is an apocalyptic number.

It is an amenable number.

105525231201 is a deficient number, since it is larger than the sum of its proper divisors (58641307335).

105525231201 is a wasteful number, since it uses less digits than its factorization.

105525231201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88913 (or 88910 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

Adding to 105525231201 its reverse (102132525501), we get a palindrome (207657756702).

The spelling of 105525231201 in words is "one hundred five billion, five hundred twenty-five million, two hundred thirty-one thousand, two hundred one".

Divisors: 1 3 9 13 39 117 11681 35043 77213 105129 151853 231639 455559 694917 1003769 1366677 3011307 9033921 901925053 2705775159 8117325477 11725025689 35175077067 105525231201