258057487 has 4 divisors (see below), whose sum is σ = 271639480. Its totient is φ = 244475496.

The previous prime is 258057479. The next prime is 258057497. The reversal of 258057487 is 784750852.

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

It is a cyclic number.

It is not a de Polignac number, because 258057487 - 2³ = 258057479 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 (258057427) 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, 6790968 + ... + 6791005.

It is an arithmetic number, because the mean of its divisors is an integer number (67909870).

Almost surely, 2^258057487 is an apocalyptic number.

258057487 is a deficient number, since it is larger than the sum of its proper divisors (13581993).

258057487 is a wasteful number, since it uses less digits than its factorization.

258057487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13581992.

The product of its (nonzero) digits is 627200, while the sum is 46.

The square root of 258057487 is about 16064.1677966834. The cubic root of 258057487 is about 636.6569551924.

The spelling of 258057487 in words is "two hundred fifty-eight million, fifty-seven thousand, four hundred eighty-seven".