57247530 has 16 divisors (see below), whose sum is σ = 137394144. Its totient is φ = 15266000.

The previous prime is 57247501. The next prime is 57247591. The reversal of 57247530 is 3574275.

57247530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×57247530² = 6554559382201800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 57247491 and 57247500.

It is an unprimeable number.

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, 954096 + ... + 954155.

It is an arithmetic number, because the mean of its divisors is an integer number (8587134).

Almost surely, 2^57247530 is an apocalyptic number.

57247530 is an abundant number, since it is smaller than the sum of its proper divisors (80146614).

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

57247530 is a wasteful number, since it uses less digits than its factorization.

57247530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1908261.

The product of its (nonzero) digits is 29400, while the sum is 33.

The square root of 57247530 is about 7566.2097512559. The cubic root of 57247530 is about 385.4063960773.

The spelling of 57247530 in words is "fifty-seven million, two hundred forty-seven thousand, five hundred thirty".