57266939 has 2 divisors, whose sum is σ = 57266940. Its totient is φ = 57266938.

The previous prime is 57266887. The next prime is 57266947. The reversal of 57266939 is 93966275.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57266939 - 2²⁴ = 40489723 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 57266893 and 57266902.

It is not a weakly prime, because it can be changed into another prime (57260939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28633469 + 28633470.

It is an arithmetic number, because the mean of its divisors is an integer number (28633470).

Almost surely, 2^57266939 is an apocalyptic number.

57266939 is a deficient number, since it is larger than the sum of its proper divisors (1).

57266939 is an equidigital number, since it uses as much as digits as its factorization.

57266939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 612360, while the sum is 47.

The square root of 57266939 is about 7567.4922530519. The cubic root of 57266939 is about 385.4499467628.

The spelling of 57266939 in words is "fifty-seven million, two hundred sixty-six thousand, nine hundred thirty-nine".