54657857 has 2 divisors, whose sum is σ = 54657858. Its totient is φ = 54657856.

The previous prime is 54657781. The next prime is 54657887. The reversal of 54657857 is 75875645.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54626881 + 30976 = 7391^2 + 176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54657857 is a prime.

It is not a weakly prime, because it can be changed into another prime (54657887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27328928 + 27328929.

It is an arithmetic number, because the mean of its divisors is an integer number (27328929).

Almost surely, 2^54657857 is an apocalyptic number.

It is an amenable number.

54657857 is a deficient number, since it is larger than the sum of its proper divisors (1).

54657857 is an equidigital number, since it uses as much as digits as its factorization.

54657857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1176000, while the sum is 47.

The square root of 54657857 is about 7393.0952245998. The cubic root of 54657857 is about 379.5050272936.

The spelling of 54657857 in words is "fifty-four million, six hundred fifty-seven thousand, eight hundred fifty-seven".