57231630 has 32 divisors (see below), whose sum is σ = 152618400. Its totient is φ = 15261696.

The previous prime is 57231623. The next prime is 57231697. The reversal of 57231630 is 3613275.

It is a happy number.

57231630 is a `hidden beast` number, since 5 + 7 + 23 + 1 + 630 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 57231594 and 57231603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105715 + ... + 106254.

It is an arithmetic number, because the mean of its divisors is an integer number (4769325).

Almost surely, 2^57231630 is an apocalyptic number.

57231630 is an abundant number, since it is smaller than the sum of its proper divisors (95386770).

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

57231630 is a wasteful number, since it uses less digits than its factorization.

57231630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211985 (or 211979 counting only the distinct ones).

The product of its (nonzero) digits is 3780, while the sum is 27.

The square root of 57231630 is about 7565.1589540472. The cubic root of 57231630 is about 385.3707116899.

The spelling of 57231630 in words is "fifty-seven million, two hundred thirty-one thousand, six hundred thirty".