258055505 has 8 divisors (see below), whose sum is σ = 312733224. Its totient is φ = 204400000.

The previous prime is 258055493. The next prime is 258055541. The reversal of 258055505 is 505550852.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 135466321 + 122589184 = 11639^2 + 11072^2 .

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

It is not a de Polignac number, because 258055505 - 2⁸ = 258055249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254996 + ... + 256005.

It is an arithmetic number, because the mean of its divisors is an integer number (39091653).

Almost surely, 2^258055505 is an apocalyptic number.

It is an amenable number.

258055505 is a deficient number, since it is larger than the sum of its proper divisors (54677719).

258055505 is a wasteful number, since it uses less digits than its factorization.

258055505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511107.

The product of its (nonzero) digits is 50000, while the sum is 35.

The square root of 258055505 is about 16064.1061064723. The cubic root of 258055505 is about 636.6553252490.

It can be divided in two parts, 2580 and 55505, that added together give a palindrome (58085).

The spelling of 258055505 in words is "two hundred fifty-eight million, fifty-five thousand, five hundred five".