5264656521 has 16 divisors (see below), whose sum is σ = 7139073024. Its totient is φ = 3450222864.

The previous prime is 5264656513. The next prime is 5264656541. The reversal of 5264656521 is 1256564625.

It is a happy number.

It is not a de Polignac number, because 5264656521 - 2³ = 5264656513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5264656511) 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, 70996 + ... + 124778.

It is an arithmetic number, because the mean of its divisors is an integer number (446192064).

Almost surely, 2^5264656521 is an apocalyptic number.

It is an amenable number.

5264656521 is a deficient number, since it is larger than the sum of its proper divisors (1874416503).

5264656521 is a wasteful number, since it uses less digits than its factorization.

5264656521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54340.

The product of its digits is 432000, while the sum is 42.

The square root of 5264656521 is about 72557.9528446055. The cubic root of 5264656521 is about 1739.6291675710.

The spelling of 5264656521 in words is "five billion, two hundred sixty-four million, six hundred fifty-six thousand, five hundred twenty-one".