258172459 has 2 divisors, whose sum is σ = 258172460. Its totient is φ = 258172458.

The previous prime is 258172417. The next prime is 258172469. The reversal of 258172459 is 954271852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 258172459 - 2¹¹ = 258170411 is a prime.

It is a super-2 number, since 2×258172459² = 133306037172213362, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (258172469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129086229 + 129086230.

It is an arithmetic number, because the mean of its divisors is an integer number (129086230).

Almost surely, 2^258172459 is an apocalyptic number.

258172459 is a deficient number, since it is larger than the sum of its proper divisors (1).

258172459 is an equidigital number, since it uses as much as digits as its factorization.

258172459 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 43.

The square root of 258172459 is about 16067.7459215660. The cubic root of 258172459 is about 636.7514907891.

The spelling of 258172459 in words is "two hundred fifty-eight million, one hundred seventy-two thousand, four hundred fifty-nine".