52561656 has 64 divisors (see below), whose sum is σ = 166867200. Its totient is φ = 15017184.

The previous prime is 52561643. The next prime is 52561673. The reversal of 52561656 is 65616525.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 52561656.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15870 + ... + 18893.

It is an arithmetic number, because the mean of its divisors is an integer number (2607300).

Almost surely, 2^52561656 is an apocalyptic number.

52561656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

52561656 is an abundant number, since it is smaller than the sum of its proper divisors (114305544).

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

52561656 is a wasteful number, since it uses less digits than its factorization.

52561656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34785 (or 34775 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 52561656 is about 7249.9417928698. The cubic root of 52561656 is about 374.5901442118.

The spelling of 52561656 in words is "fifty-two million, five hundred sixty-one thousand, six hundred fifty-six".