258405157 has 8 divisors (see below), whose sum is σ = 263595384. Its totient is φ = 253226688.

The previous prime is 258405143. The next prime is 258405163. The reversal of 258405157 is 751504852.

It can be written as a sum of positive squares in 4 ways, for example, as 17969121 + 240436036 = 4239^2 + 15506^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 258405157 - 2⁷ = 258405029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258405137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51283 + ... + 56095.

It is an arithmetic number, because the mean of its divisors is an integer number (32949423).

Almost surely, 2^258405157 is an apocalyptic number.

It is an amenable number.

258405157 is a deficient number, since it is larger than the sum of its proper divisors (5190227).

258405157 is a wasteful number, since it uses less digits than its factorization.

258405157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5879.

The product of its (nonzero) digits is 56000, while the sum is 37.

The square root of 258405157 is about 16074.9854432282. The cubic root of 258405157 is about 636.9427406026.

The spelling of 258405157 in words is "two hundred fifty-eight million, four hundred five thousand, one hundred fifty-seven".