56031501 has 4 divisors (see below), whose sum is σ = 74708672. Its totient is φ = 37354332.

The previous prime is 56031457. The next prime is 56031523. The reversal of 56031501 is 10513065.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56031501 - 2⁷ = 56031373 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 (56031571) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9338581 + ... + 9338586.

It is an arithmetic number, because the mean of its divisors is an integer number (18677168).

Almost surely, 2^56031501 is an apocalyptic number.

It is an amenable number.

56031501 is a deficient number, since it is larger than the sum of its proper divisors (18677171).

56031501 is a wasteful number, since it uses less digits than its factorization.

56031501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18677170.

The product of its (nonzero) digits is 450, while the sum is 21.

The square root of 56031501 is about 7485.4192267367. The cubic root of 56031501 is about 382.6579603042.

Adding to 56031501 its reverse (10513065), we get a palindrome (66544566).

The spelling of 56031501 in words is "fifty-six million, thirty-one thousand, five hundred one".