57311047 has 4 divisors (see below), whose sum is σ = 59287320. Its totient is φ = 55334776.

The previous prime is 57311027. The next prime is 57311057. The reversal of 57311047 is 74011375.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57311047 is a prime.

It is a super-2 number, since 2×57311047² = 6569112216472418, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57311017) 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, 988093 + ... + 988150.

It is an arithmetic number, because the mean of its divisors is an integer number (14821830).

Almost surely, 2^57311047 is an apocalyptic number.

57311047 is a deficient number, since it is larger than the sum of its proper divisors (1976273).

57311047 is a wasteful number, since it uses less digits than its factorization.

57311047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976272.

The product of its (nonzero) digits is 2940, while the sum is 28.

The square root of 57311047 is about 7570.4059996806. The cubic root of 57311047 is about 385.5488814680.

The spelling of 57311047 in words is "fifty-seven million, three hundred eleven thousand, forty-seven".