57533130 has 24 divisors (see below), whose sum is σ = 149586372. Its totient is φ = 15342144.

The previous prime is 57533081. The next prime is 57533131. The reversal of 57533130 is 3133575.

It can be written as a sum of positive squares in 2 ways, for example, as 55845729 + 1687401 = 7473^2 + 1299^2 .

It is a super-2 number, since 2×57533130² = 6620122095193800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57533094 and 57533103.

It is not an unprimeable number, because it can be changed into a prime (57533131) 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, 319539 + ... + 319718.

Almost surely, 2^57533130 is an apocalyptic number.

57533130 is an abundant number, since it is smaller than the sum of its proper divisors (92053242).

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

57533130 is a wasteful number, since it uses less digits than its factorization.

57533130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639270 (or 639267 counting only the distinct ones).

The product of its (nonzero) digits is 4725, while the sum is 27.

The square root of 57533130 is about 7585.0596569836. The cubic root of 57533130 is about 386.0462462600.

The spelling of 57533130 in words is "fifty-seven million, five hundred thirty-three thousand, one hundred thirty".