258155123 has 2 divisors, whose sum is σ = 258155124. Its totient is φ = 258155122.

The previous prime is 258155119. The next prime is 258155153. The reversal of 258155123 is 321551852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 258155123 - 2² = 258155119 is a prime.

It is a super-2 number, since 2×258155123² = 133288135062290258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 258155123.

It is not a weakly prime, because it can be changed into another prime (258155153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129077561 + 129077562.

It is an arithmetic number, because the mean of its divisors is an integer number (129077562).

Almost surely, 2^258155123 is an apocalyptic number.

258155123 is a deficient number, since it is larger than the sum of its proper divisors (1).

258155123 is an equidigital number, since it uses as much as digits as its factorization.

258155123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12000, while the sum is 32.

The square root of 258155123 is about 16067.2064466727. The cubic root of 258155123 is about 636.7372380799.

The spelling of 258155123 in words is "two hundred fifty-eight million, one hundred fifty-five thousand, one hundred twenty-three".