57620839 has 2 divisors, whose sum is σ = 57620840. Its totient is φ = 57620838.

The previous prime is 57620791. The next prime is 57620873. The reversal of 57620839 is 93802675.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 57620839 - 2²¹ = 55523687 is a prime.

It is a super-2 number, since 2×57620839² = 6640322174127842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (57620879) 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, 28810419 + 28810420.

It is an arithmetic number, because the mean of its divisors is an integer number (28810420).

Almost surely, 2^57620839 is an apocalyptic number.

57620839 is a deficient number, since it is larger than the sum of its proper divisors (1).

57620839 is an equidigital number, since it uses as much as digits as its factorization.

57620839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 57620839 is about 7590.8391499228. The cubic root of 57620839 is about 386.2423219149.

The spelling of 57620839 in words is "fifty-seven million, six hundred twenty thousand, eight hundred thirty-nine".