56997233 has 2 divisors, whose sum is σ = 56997234. Its totient is φ = 56997232.

The previous prime is 56997221. The next prime is 56997247. The reversal of 56997233 is 33279965.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36276529 + 20720704 = 6023^2 + 4552^2 .

It is a cyclic number.

It is not a de Polignac number, because 56997233 - 2⁴ = 56997217 is a prime.

It is not a weakly prime, because it can be changed into another prime (56997293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28498616 + 28498617.

It is an arithmetic number, because the mean of its divisors is an integer number (28498617).

Almost surely, 2^56997233 is an apocalyptic number.

It is an amenable number.

56997233 is a deficient number, since it is larger than the sum of its proper divisors (1).

56997233 is an equidigital number, since it uses as much as digits as its factorization.

56997233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 306180, while the sum is 44.

The square root of 56997233 is about 7549.6511839952. The cubic root of 56997233 is about 384.8438856570.

The spelling of 56997233 in words is "fifty-six million, nine hundred ninety-seven thousand, two hundred thirty-three".