56311433 has 4 divisors (see below), whose sum is σ = 56989968. Its totient is φ = 55632900.

The previous prime is 56311427. The next prime is 56311477. The reversal of 56311433 is 33411365.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56311433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56316433) 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, 339143 + ... + 339308.

It is an arithmetic number, because the mean of its divisors is an integer number (14247492).

Almost surely, 2^56311433 is an apocalyptic number.

It is an amenable number.

56311433 is a deficient number, since it is larger than the sum of its proper divisors (678535).

56311433 is an equidigital number, since it uses as much as digits as its factorization.

56311433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678534.

The product of its digits is 3240, while the sum is 26.

The square root of 56311433 is about 7504.0944157173. The cubic root of 56311433 is about 383.2941519289.

Adding to 56311433 its reverse (33411365), we get a palindrome (89722798).

The spelling of 56311433 in words is "fifty-six million, three hundred eleven thousand, four hundred thirty-three".