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56161301 = 723730977
BaseRepresentation
bin1101011000111…
…1010000010101
310220200021211012
43112033100111
5103334130201
65323422005
71251235400
oct326172025
9126607735
1056161301
11297798a9
1216984905
13b834951
14765cd37
154de55bb
hex358f415

56161301 has 12 divisors (see below), whose sum is σ = 67098348. Its totient is φ = 46835712.

The previous prime is 56161289. The next prime is 56161373. The reversal of 56161301 is 10316165.

It is a happy number.

56161301 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 54538225 + 1623076 = 7385^2 + 1274^2 .

It is not a de Polignac number, because 56161301 - 210 = 56160277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56161201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13676 + ... + 17301.

It is an arithmetic number, because the mean of its divisors is an integer number (5591529).

Almost surely, 256161301 is an apocalyptic number.

It is an amenable number.

56161301 is a deficient number, since it is larger than the sum of its proper divisors (10937047).

56161301 is a wasteful number, since it uses less digits than its factorization.

56161301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31028 (or 31021 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 56161301 is about 7494.0844003787. The cubic root of 56161301 is about 382.9532150448.

Adding to 56161301 its reverse (10316165), we get a palindrome (66477466).

The spelling of 56161301 in words is "fifty-six million, one hundred sixty-one thousand, three hundred one".

Divisors: 1 7 37 49 259 1813 30977 216839 1146149 1517873 8023043 56161301