57961643 has 2 divisors, whose sum is σ = 57961644. Its totient is φ = 57961642.

The previous prime is 57961637. The next prime is 57961663. The reversal of 57961643 is 34616975.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57961643 - 2¹⁰ = 57960619 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57961643.

It is not a weakly prime, because it can be changed into another prime (57961663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28980821 + 28980822.

It is an arithmetic number, because the mean of its divisors is an integer number (28980822).

Almost surely, 2^57961643 is an apocalyptic number.

57961643 is a deficient number, since it is larger than the sum of its proper divisors (1).

57961643 is an equidigital number, since it uses as much as digits as its factorization.

57961643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 41.

The square root of 57961643 is about 7613.2544289548. The cubic root of 57961643 is about 387.0023146619.

The spelling of 57961643 in words is "fifty-seven million, nine hundred sixty-one thousand, six hundred forty-three".