57223939 has 2 divisors, whose sum is σ = 57223940. Its totient is φ = 57223938.

The previous prime is 57223913. The next prime is 57223949. The reversal of 57223939 is 93932275.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57223939 - 2¹¹ = 57221891 is a prime.

It is not a weakly prime, because it can be changed into another prime (57223909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28611969 + 28611970.

It is an arithmetic number, because the mean of its divisors is an integer number (28611970).

Almost surely, 2^57223939 is an apocalyptic number.

57223939 is a deficient number, since it is larger than the sum of its proper divisors (1).

57223939 is an equidigital number, since it uses as much as digits as its factorization.

57223939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 40.

The square root of 57223939 is about 7564.6506198238. The cubic root of 57223939 is about 385.3534483984.

The spelling of 57223939 in words is "fifty-seven million, two hundred twenty-three thousand, nine hundred thirty-nine".