57530247 has 4 divisors (see below), whose sum is σ = 76707000. Its totient is φ = 38353496.

The previous prime is 57530201. The next prime is 57530269. The reversal of 57530247 is 74203575.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57530247 - 2⁸ = 57529991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57530147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9588372 + ... + 9588377.

It is an arithmetic number, because the mean of its divisors is an integer number (19176750).

Almost surely, 2^57530247 is an apocalyptic number.

57530247 is a deficient number, since it is larger than the sum of its proper divisors (19176753).

57530247 is a wasteful number, since it uses less digits than its factorization.

57530247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19176752.

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

The square root of 57530247 is about 7584.8696099538. The cubic root of 57530247 is about 386.0397978599.

The spelling of 57530247 in words is "fifty-seven million, five hundred thirty thousand, two hundred forty-seven".