56397433 has 4 divisors (see below), whose sum is σ = 56643940. Its totient is φ = 56150928.

The previous prime is 56397413. The next prime is 56397437. The reversal of 56397433 is 33479365.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 33479365 = 5 ⋅6695873.

It can be written as a sum of positive squares in 2 ways, for example, as 35676729 + 20720704 = 5973^2 + 4552^2 .

It is a cyclic number.

It is not a de Polignac number, because 56397433 - 2¹⁷ = 56266361 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56397437) 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, 122910 + ... + 123367.

It is an arithmetic number, because the mean of its divisors is an integer number (14160985).

Almost surely, 2^56397433 is an apocalyptic number.

It is an amenable number.

56397433 is a deficient number, since it is larger than the sum of its proper divisors (246507).

56397433 is a wasteful number, since it uses less digits than its factorization.

56397433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246506.

The product of its digits is 204120, while the sum is 40.

The square root of 56397433 is about 7509.8224346518. The cubic root of 56397433 is about 383.4891776326.

The spelling of 56397433 in words is "fifty-six million, three hundred ninety-seven thousand, four hundred thirty-three".