52640566 has 24 divisors (see below), whose sum is σ = 89152560. Its totient is φ = 23276880.

The previous prime is 52640543. The next prime is 52640587. The reversal of 52640566 is 66504625.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6015 + ... + 11893.

It is an arithmetic number, because the mean of its divisors is an integer number (3714690).

Almost surely, 2^52640566 is an apocalyptic number.

52640566 is a deficient number, since it is larger than the sum of its proper divisors (36511994).

52640566 is a wasteful number, since it uses less digits than its factorization.

52640566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5940 (or 5929 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 34.

The square root of 52640566 is about 7255.3818645196. The cubic root of 52640566 is about 374.7775059424. Note that the first 3 decimals are identical.

The spelling of 52640566 in words is "fifty-two million, six hundred forty thousand, five hundred sixty-six".