5721564 has 24 divisors (see below), whose sum is σ = 13395088. Its totient is φ = 1900800.

The previous prime is 5721563. The next prime is 5721589. The reversal of 5721564 is 4651275.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5721563) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4164 + ... + 5364.

Almost surely, 2^5721564 is an apocalyptic number.

It is an amenable number.

5721564 is an abundant number, since it is smaller than the sum of its proper divisors (7673524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5721564 is a wasteful number, since it uses less digits than its factorization.

5721564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1605 (or 1603 counting only the distinct ones).

The product of its digits is 8400, while the sum is 30.

The square root of 5721564 is about 2391.9790968986. The cubic root of 5721564 is about 178.8565791445.

The spelling of 5721564 in words is "five million, seven hundred twenty-one thousand, five hundred sixty-four".