57311149 has 4 divisors (see below), whose sum is σ = 65498464. Its totient is φ = 49123836.

The previous prime is 57311141. The next prime is 57311171. The reversal of 57311149 is 94111375.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57311149 - 2³ = 57311141 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57311149.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57311141) 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, 4093647 + ... + 4093660.

It is an arithmetic number, because the mean of its divisors is an integer number (16374616).

Almost surely, 2^57311149 is an apocalyptic number.

It is an amenable number.

57311149 is a deficient number, since it is larger than the sum of its proper divisors (8187315).

57311149 is an equidigital number, since it uses as much as digits as its factorization.

57311149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8187314.

The product of its digits is 3780, while the sum is 31.

The square root of 57311149 is about 7570.4127364365. The cubic root of 57311149 is about 385.5491101962.

The spelling of 57311149 in words is "fifty-seven million, three hundred eleven thousand, one hundred forty-nine".