258312157 has 2 divisors, whose sum is σ = 258312158. Its totient is φ = 258312156.

The previous prime is 258312151. The next prime is 258312199. The reversal of 258312157 is 751213852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 249197796 + 9114361 = 15786^2 + 3019^2 .

It is a cyclic number.

It is not a de Polignac number, because 258312157 - 2¹¹ = 258310109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258312151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129156078 + 129156079.

It is an arithmetic number, because the mean of its divisors is an integer number (129156079).

Almost surely, 2^258312157 is an apocalyptic number.

It is an amenable number.

258312157 is a deficient number, since it is larger than the sum of its proper divisors (1).

258312157 is an equidigital number, since it uses as much as digits as its factorization.

258312157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16800, while the sum is 34.

The square root of 258312157 is about 16072.0924897787. The cubic root of 258312157 is about 636.8663195496.

The spelling of 258312157 in words is "two hundred fifty-eight million, three hundred twelve thousand, one hundred fifty-seven".