57508530 has 16 divisors (see below), whose sum is σ = 138020544. Its totient is φ = 15335600.

The previous prime is 57508513. The next prime is 57508531. The reversal of 57508530 is 3580575.

57508530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 57508491 and 57508500.

It is not an unprimeable number, because it can be changed into a prime (57508531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 958446 + ... + 958505.

It is an arithmetic number, because the mean of its divisors is an integer number (8626284).

Almost surely, 2^57508530 is an apocalyptic number.

57508530 is an abundant number, since it is smaller than the sum of its proper divisors (80512014).

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

57508530 is a wasteful number, since it uses less digits than its factorization.

57508530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1916961.

The product of its (nonzero) digits is 21000, while the sum is 33.

The square root of 57508530 is about 7583.4378747373. The cubic root of 57508530 is about 385.9912165666.

The spelling of 57508530 in words is "fifty-seven million, five hundred eight thousand, five hundred thirty".