57163939 has 12 divisors (see below), whose sum is σ = 66690000. Its totient is φ = 48855408.

The previous prime is 57163921. The next prime is 57163949. The reversal of 57163939 is 93936175.

It is a happy number.

It is not a de Polignac number, because 57163939 - 2¹¹ = 57161891 is a prime.

It is a Duffinian number.

Its product of digits (153090) is a multiple of the sum of its prime factors (3402).

It is a junction number, because it is equal to n+sod(n) for n = 57163895 and 57163904.

It is not an unprimeable number, because it can be changed into a prime (57163949) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17562 + ... + 20560.

It is an arithmetic number, because the mean of its divisors is an integer number (5557500).

Almost surely, 2^57163939 is an apocalyptic number.

57163939 is a deficient number, since it is larger than the sum of its proper divisors (9526061).

57163939 is a wasteful number, since it uses less digits than its factorization.

57163939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3402 (or 3395 counting only the distinct ones).

The product of its digits is 153090, while the sum is 43.

The square root of 57163939 is about 7560.6837653747. The cubic root of 57163939 is about 385.2187186975.

The spelling of 57163939 in words is "fifty-seven million, one hundred sixty-three thousand, nine hundred thirty-nine".