57021233 has 2 divisors, whose sum is σ = 57021234. Its totient is φ = 57021232.

The previous prime is 57021227. The next prime is 57021241. The reversal of 57021233 is 33212075.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30724849 + 26296384 = 5543^2 + 5128^2 .

It is a cyclic number.

It is not a de Polignac number, because 57021233 - 2⁶ = 57021169 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 57021199 and 57021208.

It is not a weakly prime, because it can be changed into another prime (57021533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28510616 + 28510617.

It is an arithmetic number, because the mean of its divisors is an integer number (28510617).

Almost surely, 2^57021233 is an apocalyptic number.

It is an amenable number.

57021233 is a deficient number, since it is larger than the sum of its proper divisors (1).

57021233 is an equidigital number, since it uses as much as digits as its factorization.

57021233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 23.

The square root of 57021233 is about 7551.2404941175. The cubic root of 57021233 is about 384.8978938763.

The spelling of 57021233 in words is "fifty-seven million, twenty-one thousand, two hundred thirty-three".