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5115531001 = 79723393221
BaseRepresentation
bin1001100001110100…
…01100111011111001
3111012111202220022011
410300322030323321
540434033443001
62203335325521
7240524203360
oct46072147371
914174686264
105115531001
112195647179
12ba92208a1
13636a7c629
143675767d7
151ee177d51
hex130e8cef9

5115531001 has 16 divisors (see below), whose sum is σ = 5910952320. Its totient is φ = 4336335360.

The previous prime is 5115530963. The next prime is 5115531049. The reversal of 5115531001 is 1001355115.

It is not a de Polignac number, because 5115531001 - 29 = 5115530489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5115531301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1586571 + ... + 1589791.

It is an arithmetic number, because the mean of its divisors is an integer number (369434520).

Almost surely, 25115531001 is an apocalyptic number.

It is an amenable number.

5115531001 is a deficient number, since it is larger than the sum of its proper divisors (795421319).

5115531001 is a wasteful number, since it uses less digits than its factorization.

5115531001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5664.

The product of its (nonzero) digits is 375, while the sum is 22.

The square root of 5115531001 is about 71522.9403827891. The cubic root of 5115531001 is about 1723.0461390487.

Adding to 5115531001 its reverse (1001355115), we get a palindrome (6116886116).

The spelling of 5115531001 in words is "five billion, one hundred fifteen million, five hundred thirty-one thousand, one".

Divisors: 1 7 97 679 2339 3221 16373 22547 226883 312437 1588181 2187059 7533919 52737433 730790143 5115531001