258409261 has 16 divisors (see below), whose sum is σ = 286473600. Its totient is φ = 231137280.

The previous prime is 258409259. The next prime is 258409267. The reversal of 258409261 is 162904852.

It is not a de Polignac number, because 258409261 - 2¹ = 258409259 is a prime.

It is a super-2 number, since 2×258409261² = 133550692341132242, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 258409261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (258409267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211725 + ... + 212941.

It is an arithmetic number, because the mean of its divisors is an integer number (17904600).

Almost surely, 2^258409261 is an apocalyptic number.

It is an amenable number.

258409261 is a deficient number, since it is larger than the sum of its proper divisors (28064339).

258409261 is a wasteful number, since it uses less digits than its factorization.

258409261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1524.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 258409261 is about 16075.1130944700. The cubic root of 258409261 is about 636.9461125672.

The spelling of 258409261 in words is "two hundred fifty-eight million, four hundred nine thousand, two hundred sixty-one".