57258239 has 8 divisors (see below), whose sum is σ = 58092480. Its totient is φ = 56428416.

The previous prime is 57258233. The next prime is 57258259. The reversal of 57258239 is 93285275.

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

It is a cyclic number.

It is not a de Polignac number, because 57258239 - 2¹² = 57254143 is a prime.

It is a super-2 number, since 2×57258239² = 6557011866762242, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57258196 and 57258205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57258233) 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, 31787 + ... + 33539.

It is an arithmetic number, because the mean of its divisors is an integer number (7261560).

Almost surely, 2^57258239 is an apocalyptic number.

57258239 is a deficient number, since it is larger than the sum of its proper divisors (834241).

57258239 is a wasteful number, since it uses less digits than its factorization.

57258239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209.

The product of its digits is 151200, while the sum is 41.

The square root of 57258239 is about 7566.9174040688. The cubic root of 57258239 is about 385.4304265741.

The spelling of 57258239 in words is "fifty-seven million, two hundred fifty-eight thousand, two hundred thirty-nine".