258234401 has 4 divisors (see below), whose sum is σ = 258267204. Its totient is φ = 258201600.

The previous prime is 258234373. The next prime is 258234413. The reversal of 258234401 is 104432852.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 161900176 + 96334225 = 12724^2 + 9815^2 .

It is a cyclic number.

It is not a de Polignac number, because 258234401 - 2⁶ = 258234337 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (258234461) 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, 3281 + ... + 22961.

It is an arithmetic number, because the mean of its divisors is an integer number (64566801).

It is a Poulet number, since it divides 2^258234400-1.

Almost surely, 2^258234401 is an apocalyptic number.

258234401 is the 13121-st pentagonal number.

It is an amenable number.

258234401 is a deficient number, since it is larger than the sum of its proper divisors (32803).

258234401 is a wasteful number, since it uses less digits than its factorization.

258234401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32802.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 258234401 is about 16069.6733320874. The cubic root of 258234401 is about 636.8024108951.

The spelling of 258234401 in words is "two hundred fifty-eight million, two hundred thirty-four thousand, four hundred one".