258574421 has 6 divisors (see below), whose sum is σ = 300790710. Its totient is φ = 221635176.

The previous prime is 258574409. The next prime is 258574429. The reversal of 258574421 is 124475852.

258574421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 171898321 + 86676100 = 13111^2 + 9310^2 .

It is not a de Polignac number, because 258574421 - 2²² = 254380117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258574429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2638466 + ... + 2638563.

It is an arithmetic number, because the mean of its divisors is an integer number (50131785).

Almost surely, 2^258574421 is an apocalyptic number.

It is an amenable number.

258574421 is a deficient number, since it is larger than the sum of its proper divisors (42216289).

258574421 is an equidigital number, since it uses as much as digits as its factorization.

258574421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5277043 (or 5277036 counting only the distinct ones).

The product of its digits is 89600, while the sum is 38.

The square root of 258574421 is about 16080.2494072698. The cubic root of 258574421 is about 637.0817831638.

The spelling of 258574421 in words is "two hundred fifty-eight million, five hundred seventy-four thousand, four hundred twenty-one".