57308530 has 32 divisors (see below), whose sum is σ = 109707696. Its totient is φ = 21479424.

The previous prime is 57308527. The next prime is 57308533. The reversal of 57308530 is 3580375.

It is an interprime number because it is at equal distance from previous prime (57308527) and next prime (57308533).

It can be written as a sum of positive squares in 8 ways, for example, as 18258529 + 39050001 = 4273^2 + 6249^2 .

It is a super-2 number, since 2×57308530² = 6568535221521800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57308492 and 57308501.

It is not an unprimeable number, because it can be changed into a prime (57308533) 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, 46482 + ... + 47698.

Almost surely, 2^57308530 is an apocalyptic number.

57308530 is a deficient number, since it is larger than the sum of its proper divisors (52399166).

57308530 is a wasteful number, since it uses less digits than its factorization.

57308530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 57308530 is about 7570.2397584225. The cubic root of 57308530 is about 385.5432371767.

The spelling of 57308530 in words is "fifty-seven million, three hundred eight thousand, five hundred thirty".