57293439 has 8 divisors (see below), whose sum is σ = 87304320. Its totient is φ = 32739096.

The previous prime is 57293429. The next prime is 57293443. The reversal of 57293439 is 93439275.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 57293439 - 2⁷ = 57293311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 57293439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57293429) 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 7 ways as a sum of consecutive naturals, for example, 1364109 + ... + 1364150.

It is an arithmetic number, because the mean of its divisors is an integer number (10913040).

Almost surely, 2^57293439 is an apocalyptic number.

57293439 is a deficient number, since it is larger than the sum of its proper divisors (30010881).

57293439 is a wasteful number, since it uses less digits than its factorization.

57293439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2728269.

The product of its digits is 204120, while the sum is 42.

The square root of 57293439 is about 7569.2429608251. The cubic root of 57293439 is about 385.5093926293.

The spelling of 57293439 in words is "fifty-seven million, two hundred ninety-three thousand, four hundred thirty-nine".