56731001 has 4 divisors (see below), whose sum is σ = 57508212. Its totient is φ = 55953792.

The previous prime is 56730967. The next prime is 56731019. The reversal of 56731001 is 10013765.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43033600 + 13697401 = 6560^2 + 3701^2 .

It is a cyclic number.

It is not a de Polignac number, because 56731001 - 2¹⁴ = 56714617 is a prime.

It is a super-3 number, since 3×56731001³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56734001) 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, 388496 + ... + 388641.

It is an arithmetic number, because the mean of its divisors is an integer number (14377053).

Almost surely, 2^56731001 is an apocalyptic number.

It is an amenable number.

56731001 is a deficient number, since it is larger than the sum of its proper divisors (777211).

56731001 is an equidigital number, since it uses as much as digits as its factorization.

56731001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777210.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 56731001 is about 7531.9984731809. The cubic root of 56731001 is about 384.2437530265.

Adding to 56731001 its sum of digits (23), we get a square (56731024 = 7532²).

Adding to 56731001 its reverse (10013765), we get a palindrome (66744766).

The spelling of 56731001 in words is "fifty-six million, seven hundred thirty-one thousand, one".