258115387 has 2 divisors, whose sum is σ = 258115388. Its totient is φ = 258115386.

The previous prime is 258115381. The next prime is 258115409. The reversal of 258115387 is 783511852.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 258115387 - 2⁷ = 258115259 is a prime.

It is not a weakly prime, because it can be changed into another prime (258115381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129057693 + 129057694.

It is an arithmetic number, because the mean of its divisors is an integer number (129057694).

Almost surely, 2^258115387 is an apocalyptic number.

258115387 is a deficient number, since it is larger than the sum of its proper divisors (1).

258115387 is an equidigital number, since it uses as much as digits as its factorization.

258115387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 40.

The square root of 258115387 is about 16065.9698431187. The cubic root of 258115387 is about 636.7045669107.

The spelling of 258115387 in words is "two hundred fifty-eight million, one hundred fifteen thousand, three hundred eighty-seven".