258490361 has 2 divisors, whose sum is σ = 258490362. Its totient is φ = 258490360.

The previous prime is 258490357. The next prime is 258490409. The reversal of 258490361 is 163094852.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170955625 + 87534736 = 13075^2 + 9356^2 .

It is a cyclic number.

It is not a de Polignac number, because 258490361 - 2² = 258490357 is a prime.

It is not a weakly prime, because it can be changed into another prime (258490061) 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, 129245180 + 129245181.

It is an arithmetic number, because the mean of its divisors is an integer number (129245181).

Almost surely, 2^258490361 is an apocalyptic number.

It is an amenable number.

258490361 is a deficient number, since it is larger than the sum of its proper divisors (1).

258490361 is an equidigital number, since it uses as much as digits as its factorization.

258490361 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 258490361 is about 16077.6354293783. The cubic root of 258490361 is about 637.0127393417.

The spelling of 258490361 in words is "two hundred fifty-eight million, four hundred ninety thousand, three hundred sixty-one".