56640501 has 12 divisors (see below), whose sum is σ = 86120320. Its totient is φ = 35772840.

The previous prime is 56640491. The next prime is 56640523. The reversal of 56640501 is 10504665.

It is a happy number.

56640501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 56640501 - 2¹⁹ = 56116213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56640541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 165445 + ... + 165786.

Almost surely, 2^56640501 is an apocalyptic number.

It is an amenable number.

56640501 is a deficient number, since it is larger than the sum of its proper divisors (29479819).

56640501 is a wasteful number, since it uses less digits than its factorization.

56640501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331256 (or 331253 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 56640501 is about 7525.9883736291. The cubic root of 56640501 is about 384.0393229587.

The spelling of 56640501 in words is "fifty-six million, six hundred forty thousand, five hundred one".