2501564 has 24 divisors (see below), whose sum is σ = 4786320. Its totient is φ = 1137024.

The previous prime is 2501563. The next prime is 2501573. The reversal of 2501564 is 4651052.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2501563) 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, 3467 + ... + 4125.

It is an arithmetic number, because the mean of its divisors is an integer number (199430).

2^2501564 is an apocalyptic number.

It is an amenable number.

2501564 is a deficient number, since it is larger than the sum of its proper divisors (2284756).

2501564 is a wasteful number, since it uses less digits than its factorization.

2501564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749 (or 747 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2501564 is about 1581.6333329821. The cubic root of 2501564 is about 135.7491772575.

The spelling of 2501564 in words is "two million, five hundred one thousand, five hundred sixty-four".