3564404521 has 16 divisors (see below), whose sum is σ = 3781900800. Its totient is φ = 3354595200.

The previous prime is 3564404513. The next prime is 3564404533. The reversal of 3564404521 is 1254044653.

It is a cyclic number.

It is not a de Polignac number, because 3564404521 - 2³ = 3564404513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3564404561) 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, 157710 + ... + 178888.

It is an arithmetic number, because the mean of its divisors is an integer number (236368800).

Almost surely, 2^3564404521 is an apocalyptic number.

3564404521 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

3564404521 is a deficient number, since it is larger than the sum of its proper divisors (217496279).

3564404521 is a wasteful number, since it uses less digits than its factorization.

3564404521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21360.

The product of its (nonzero) digits is 57600, while the sum is 34.

The square root of 3564404521 is about 59702.6341211173. The cubic root of 3564404521 is about 1527.5507998638.

The spelling of 3564404521 in words is "three billion, five hundred sixty-four million, four hundred four thousand, five hundred twenty-one".