57455947 has 2 divisors, whose sum is σ = 57455948. Its totient is φ = 57455946.

The previous prime is 57455941. The next prime is 57455963. The reversal of 57455947 is 74955475.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57455947 - 2¹⁹ = 56931659 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 57455897 and 57455906.

It is not a weakly prime, because it can be changed into another prime (57455941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28727973 + 28727974.

It is an arithmetic number, because the mean of its divisors is an integer number (28727974).

Almost surely, 2^57455947 is an apocalyptic number.

57455947 is a deficient number, since it is larger than the sum of its proper divisors (1).

57455947 is an equidigital number, since it uses as much as digits as its factorization.

57455947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 882000, while the sum is 46.

The square root of 57455947 is about 7579.9701186746. The cubic root of 57455947 is about 385.8735368337.

The spelling of 57455947 in words is "fifty-seven million, four hundred fifty-five thousand, nine hundred forty-seven".