161259255 has 20 divisors (see below), whose sum is σ = 289072872. Its totient is φ = 86004720.

The previous prime is 161259223. The next prime is 161259271. The reversal of 161259255 is 552952161.

161259255 is a `hidden beast` number, since 1 + 6 + 12 + 592 + 55 = 666.

It is not a de Polignac number, because 161259255 - 2⁵ = 161259223 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 198681 + ... + 199490.

Almost surely, 2^161259255 is an apocalyptic number.

161259255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161259255 is a deficient number, since it is larger than the sum of its proper divisors (127813617).

161259255 is an equidigital number, since it uses as much as digits as its factorization.

161259255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398188 (or 398179 counting only the distinct ones).

The product of its digits is 27000, while the sum is 36.

The square root of 161259255 is about 12698.7895092406. The cubic root of 161259255 is about 544.3040298346.

The spelling of 161259255 in words is "one hundred sixty-one million, two hundred fifty-nine thousand, two hundred fifty-five".