258490237 has 2 divisors, whose sum is σ = 258490238. Its totient is φ = 258490236.

The previous prime is 258490223. The next prime is 258490247. The reversal of 258490237 is 732094852.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 256448196 + 2042041 = 16014^2 + 1429^2 .

It is a cyclic number.

It is not a de Polignac number, because 258490237 - 2¹⁹ = 257965949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 258490237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (258490207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129245118 + 129245119.

It is an arithmetic number, because the mean of its divisors is an integer number (129245119).

Almost surely, 2^258490237 is an apocalyptic number.

It is an amenable number.

258490237 is a deficient number, since it is larger than the sum of its proper divisors (1).

258490237 is an equidigital number, since it uses as much as digits as its factorization.

258490237 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 258490237 is about 16077.6315730894. The cubic root of 258490237 is about 637.0126374816.

The spelling of 258490237 in words is "two hundred fifty-eight million, four hundred ninety thousand, two hundred thirty-seven".