57477947 has 2 divisors, whose sum is σ = 57477948. Its totient is φ = 57477946.

The previous prime is 57477929. The next prime is 57477967. The reversal of 57477947 is 74977475.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 57477947 - 2¹⁴ = 57461563 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 57477895 and 57477904.

It is not a weakly prime, because it can be changed into another prime (57477967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28738973 + 28738974.

It is an arithmetic number, because the mean of its divisors is an integer number (28738974).

Almost surely, 2^57477947 is an apocalyptic number.

57477947 is a deficient number, since it is larger than the sum of its proper divisors (1).

57477947 is an equidigital number, since it uses as much as digits as its factorization.

57477947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728720, while the sum is 50.

The square root of 57477947 is about 7581.4211728409. The cubic root of 57477947 is about 385.9227811386.

The spelling of 57477947 in words is "fifty-seven million, four hundred seventy-seven thousand, nine hundred forty-seven".