258537049 has 2 divisors, whose sum is σ = 258537050. Its totient is φ = 258537048.

The previous prime is 258537023. The next prime is 258537101. The reversal of 258537049 is 940735852.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 210830400 + 47706649 = 14520^2 + 6907^2 .

It is a cyclic number.

It is not a de Polignac number, because 258537049 - 2¹¹ = 258535001 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 258536996 and 258537014.

It is not a weakly prime, because it can be changed into another prime (258547049) 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 as a sum of consecutive naturals, namely, 129268524 + 129268525.

It is an arithmetic number, because the mean of its divisors is an integer number (129268525).

Almost surely, 2^258537049 is an apocalyptic number.

It is an amenable number.

258537049 is a deficient number, since it is larger than the sum of its proper divisors (1).

258537049 is an equidigital number, since it uses as much as digits as its factorization.

258537049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 43.

The square root of 258537049 is about 16079.0873186260. The cubic root of 258537049 is about 637.0510890120.

The spelling of 258537049 in words is "two hundred fifty-eight million, five hundred thirty-seven thousand, forty-nine".