56442501 has 30 divisors (see below), whose sum is σ = 86825970. Its totient is φ = 36539424.

The previous prime is 56442487. The next prime is 56442511. The reversal of 56442501 is 10524465.

It can be written as a sum of positive squares in 3 ways, for example, as 40832100 + 15610401 = 6390^2 + 3951^2 .

It is not a de Polignac number, because 56442501 - 2⁵ = 56442469 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56442511) by changing a digit.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 110635 + ... + 111143.

It is an arithmetic number, because the mean of its divisors is an integer number (2894199).

Almost surely, 2^56442501 is an apocalyptic number.

It is an amenable number.

56442501 is a deficient number, since it is larger than the sum of its proper divisors (30383469).

56442501 is an equidigital number, since it uses as much as digits as its factorization.

56442501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595 (or 549 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 56442501 is about 7512.8224390039. The cubic root of 56442501 is about 383.5913010075.

Adding to 56442501 its reverse (10524465), we get a palindrome (66966966).

The spelling of 56442501 in words is "fifty-six million, four hundred forty-two thousand, five hundred one".