57023311 has 2 divisors, whose sum is σ = 57023312. Its totient is φ = 57023310.

The previous prime is 57023299. The next prime is 57023339. The reversal of 57023311 is 11332075.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57023311 - 2²¹ = 54926159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57023341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28511655 + 28511656.

It is an arithmetic number, because the mean of its divisors is an integer number (28511656).

Almost surely, 2^57023311 is an apocalyptic number.

57023311 is a deficient number, since it is larger than the sum of its proper divisors (1).

57023311 is an equidigital number, since it uses as much as digits as its factorization.

57023311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 57023311 is about 7551.3780861509. The cubic root of 57023311 is about 384.9025693750.

Adding to 57023311 its reverse (11332075), we get a palindrome (68355386).

The spelling of 57023311 in words is "fifty-seven million, twenty-three thousand, three hundred eleven".