54779157 has 24 divisors (see below), whose sum is σ = 82614168. Its totient is φ = 34944000.

The previous prime is 54779113. The next prime is 54779177. The reversal of 54779157 is 75197745.

It can be written as a sum of positive squares in 4 ways, for example, as 2852721 + 51926436 = 1689^2 + 7206^2 .

It is not a de Polignac number, because 54779157 - 2⁸ = 54778901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54779177) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18157 + ... + 20957.

It is an arithmetic number, because the mean of its divisors is an integer number (3442257).

Almost surely, 2^54779157 is an apocalyptic number.

It is an amenable number.

54779157 is a deficient number, since it is larger than the sum of its proper divisors (27835011).

54779157 is a wasteful number, since it uses less digits than its factorization.

54779157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2901 (or 2898 counting only the distinct ones).

The product of its digits is 308700, while the sum is 45.

The square root of 54779157 is about 7401.2942787056. The cubic root of 54779157 is about 379.7855599896.

The spelling of 54779157 in words is "fifty-four million, seven hundred seventy-nine thousand, one hundred fifty-seven".