56556501 has 16 divisors (see below), whose sum is σ = 80092800. Its totient is φ = 35376128.

The previous prime is 56556491. The next prime is 56556523. The reversal of 56556501 is 10565565.

It is a cyclic number.

It is not a de Polignac number, because 56556501 - 2⁵ = 56556469 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56556571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16765 + ... + 19853.

It is an arithmetic number, because the mean of its divisors is an integer number (5005800).

Almost surely, 2^56556501 is an apocalyptic number.

56556501 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

56556501 is a deficient number, since it is larger than the sum of its proper divisors (23536299).

56556501 is a wasteful number, since it uses less digits than its factorization.

56556501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3468.

The product of its (nonzero) digits is 22500, while the sum is 33.

The square root of 56556501 is about 7520.4056406553. The cubic root of 56556501 is about 383.8493807621.

The spelling of 56556501 in words is "fifty-six million, five hundred fifty-six thousand, five hundred one".