57905389 has 4 divisors (see below), whose sum is σ = 58111740. Its totient is φ = 57699040.

The previous prime is 57905371. The next prime is 57905429. The reversal of 57905389 is 98350975.

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

It can be written as a sum of positive squares in 2 ways, for example, as 21206025 + 36699364 = 4605^2 + 6058^2 .

It is a cyclic number.

It is not a de Polignac number, because 57905389 - 2⁵ = 57905357 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 (57905359) 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, 102754 + ... + 103315.

It is an arithmetic number, because the mean of its divisors is an integer number (14527935).

Almost surely, 2^57905389 is an apocalyptic number.

It is an amenable number.

57905389 is a deficient number, since it is larger than the sum of its proper divisors (206351).

57905389 is a wasteful number, since it uses less digits than its factorization.

57905389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206350.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 57905389 is about 7609.5590542422. The cubic root of 57905389 is about 386.8770739343.

The spelling of 57905389 in words is "fifty-seven million, nine hundred five thousand, three hundred eighty-nine".