258241572 has 18 divisors (see below), whose sum is σ = 652777398. Its totient is φ = 86080512.

The previous prime is 258241553. The next prime is 258241583. The reversal of 258241572 is 275142852.

It is a happy number.

258241572 is a `hidden beast` number, since 2 + 5 + 82 + 4 + 1 + 572 = 666.

It can be written as a sum of positive squares in only one way, i.e., 236113956 + 22127616 = 15366^2 + 4704^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 7173377 = 258241572 / (2 + 5 + 8 + 2 + 4 + 1 + 5 + 7 + 2).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3586653 + ... + 3586724.

It is an arithmetic number, because the mean of its divisors is an integer number (36265411).

Almost surely, 2^258241572 is an apocalyptic number.

It is an amenable number.

258241572 is an abundant number, since it is smaller than the sum of its proper divisors (394535826).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

258241572 is a wasteful number, since it uses less digits than its factorization.

258241572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7173387 (or 7173382 counting only the distinct ones).

The product of its digits is 44800, while the sum is 36.

The square root of 258241572 is about 16069.8964526844. The cubic root of 258241572 is about 636.8083053690.

The spelling of 258241572 in words is "two hundred fifty-eight million, two hundred forty-one thousand, five hundred seventy-two".