155512255 has 8 divisors (see below), whose sum is σ = 186825024. Its totient is φ = 124269600.

The previous prime is 155512219. The next prime is 155512267. The reversal of 155512255 is 552215551.

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

It is a de Polignac number, because none of the positive numbers 2^k-155512255 is a prime.

It is a super-2 number, since 2×155512255² = 48368122910370050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 12516 + ... + 21625.

It is an arithmetic number, because the mean of its divisors is an integer number (23353128).

Almost surely, 2^155512255 is an apocalyptic number.

155512255 is a deficient number, since it is larger than the sum of its proper divisors (31312769).

155512255 is an equidigital number, since it uses as much as digits as its factorization.

155512255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35057.

The product of its digits is 12500, while the sum is 31.

The square root of 155512255 is about 12470.4552843912. The cubic root of 155512255 is about 537.7596423605.

The spelling of 155512255 in words is "one hundred fifty-five million, five hundred twelve thousand, two hundred fifty-five".