57030247 has 4 divisors (see below), whose sum is σ = 57213936. Its totient is φ = 56846560.

The previous prime is 57030227. The next prime is 57030263. The reversal of 57030247 is 74203075.

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 57030247 - 2¹¹ = 57028199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57030227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91378 + ... + 91999.

It is an arithmetic number, because the mean of its divisors is an integer number (14303484).

Almost surely, 2^57030247 is an apocalyptic number.

57030247 is a deficient number, since it is larger than the sum of its proper divisors (183689).

57030247 is a wasteful number, since it uses less digits than its factorization.

57030247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183688.

The product of its (nonzero) digits is 5880, while the sum is 28.

The square root of 57030247 is about 7551.8373261081. The cubic root of 57030247 is about 384.9181745485.

The spelling of 57030247 in words is "fifty-seven million, thirty thousand, two hundred forty-seven".