57581947 has 2 divisors, whose sum is σ = 57581948. Its totient is φ = 57581946.

The previous prime is 57581939. The next prime is 57581957. The reversal of 57581947 is 74918575.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57581947 - 2³ = 57581939 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57581897 and 57581906.

It is not a weakly prime, because it can be changed into another prime (57581957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28790973 + 28790974.

It is an arithmetic number, because the mean of its divisors is an integer number (28790974).

Almost surely, 2^57581947 is an apocalyptic number.

57581947 is a deficient number, since it is larger than the sum of its proper divisors (1).

57581947 is an equidigital number, since it uses as much as digits as its factorization.

57581947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 352800, while the sum is 46.

The square root of 57581947 is about 7588.2769453941. The cubic root of 57581947 is about 386.1554024507.

The spelling of 57581947 in words is "fifty-seven million, five hundred eighty-one thousand, nine hundred forty-seven".