57573138 has 48 divisors (see below), whose sum is σ = 138288384. Its totient is φ = 15916320.

The previous prime is 57573079. The next prime is 57573151. The reversal of 57573138 is 83137575.

It is a junction number, because it is equal to n+sod(n) for n = 57573096 and 57573105.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5956 + ... + 12272.

It is an arithmetic number, because the mean of its divisors is an integer number (2881008).

Almost surely, 2^57573138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57573138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69144192).

57573138 is an abundant number, since it is smaller than the sum of its proper divisors (80715246).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

57573138 is a wasteful number, since it uses less digits than its factorization.

57573138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6367 (or 6360 counting only the distinct ones).

The product of its digits is 88200, while the sum is 39.

The square root of 57573138 is about 7587.6964883949. The cubic root of 57573138 is about 386.1357098410.

The spelling of 57573138 in words is "fifty-seven million, five hundred seventy-three thousand, one hundred thirty-eight".