56565501 has 8 divisors (see below), whose sum is σ = 76375680. Its totient is φ = 37232832.

The previous prime is 56565499. The next prime is 56565503. The reversal of 56565501 is 10556565.

56565501 = 2503² + 2504² + ... + 2511².

It is an interprime number because it is at equal distance from previous prime (56565499) and next prime (56565503).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56565501 - 2¹ = 56565499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56565503) 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 7 ways as a sum of consecutive naturals, for example, 119100 + ... + 119573.

It is an arithmetic number, because the mean of its divisors is an integer number (9546960).

Almost surely, 2^56565501 is an apocalyptic number.

It is an amenable number.

56565501 is a deficient number, since it is larger than the sum of its proper divisors (19810179).

56565501 is a wasteful number, since it uses less digits than its factorization.

56565501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238755.

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

The square root of 56565501 is about 7521.0039888302. The cubic root of 56565501 is about 383.8697407038.

It can be divided in two parts, 565 and 65501, that added together give a palindrome (66066).

The spelling of 56565501 in words is "fifty-six million, five hundred sixty-five thousand, five hundred one".