57147393 has 16 divisors (see below), whose sum is σ = 77544896. Its totient is φ = 37428480.

The previous prime is 57147379. The next prime is 57147397. The reversal of 57147393 is 39374175.

It is a happy number.

It is not a de Polignac number, because 57147393 - 2⁶ = 57147329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57147397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99798 + ... + 100368.

It is an arithmetic number, because the mean of its divisors is an integer number (4846556).

It is a Proth number, since it is equal to 109 ⋅ 2¹⁹ + 1 and 109 < 2¹⁹.

Almost surely, 2^57147393 is an apocalyptic number.

It is an amenable number.

57147393 is a deficient number, since it is larger than the sum of its proper divisors (20397503).

57147393 is a wasteful number, since it uses less digits than its factorization.

57147393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1104.

The product of its digits is 79380, while the sum is 39.

The square root of 57147393 is about 7559.5894729807. The cubic root of 57147393 is about 385.1815481543.

The spelling of 57147393 in words is "fifty-seven million, one hundred forty-seven thousand, three hundred ninety-three".