56531303 has 2 divisors, whose sum is σ = 56531304. Its totient is φ = 56531302.

The previous prime is 56531297. The next prime is 56531311. The reversal of 56531303 is 30313565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56531303 - 2²⁴ = 39754087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56531603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28265651 + 28265652.

It is an arithmetic number, because the mean of its divisors is an integer number (28265652).

Almost surely, 2^56531303 is an apocalyptic number.

56531303 is a deficient number, since it is larger than the sum of its proper divisors (1).

56531303 is an equidigital number, since it uses as much as digits as its factorization.

56531303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4050, while the sum is 26.

The square root of 56531303 is about 7518.7301454434. The cubic root of 56531303 is about 383.7923659579.

Adding to 56531303 its reverse (30313565), we get a palindrome (86844868).

The spelling of 56531303 in words is "fifty-six million, five hundred thirty-one thousand, three hundred three".