57178949 has 16 divisors (see below), whose sum is σ = 60954432. Its totient is φ = 53561088.

The previous prime is 57178921. The next prime is 57178987. The reversal of 57178949 is 94987175.

It is a cyclic number.

It is not a de Polignac number, because 57178949 - 2¹² = 57174853 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 57178897 and 57178906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57178249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131837 + ... + 132269.

It is an arithmetic number, because the mean of its divisors is an integer number (3809652).

Almost surely, 2^57178949 is an apocalyptic number.

It is an amenable number.

57178949 is a deficient number, since it is larger than the sum of its proper divisors (3775483).

57178949 is a wasteful number, since it uses less digits than its factorization.

57178949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 596.

The product of its digits is 635040, while the sum is 50.

The square root of 57178949 is about 7561.6763353108. The cubic root of 57178949 is about 385.2524324166.

The spelling of 57178949 in words is "fifty-seven million, one hundred seventy-eight thousand, nine hundred forty-nine".