161133055 has 16 divisors (see below), whose sum is σ = 213637824. Its totient is φ = 116047360.

The previous prime is 161133047. The next prime is 161133067. The reversal of 161133055 is 550331161.

It is not a de Polignac number, because 161133055 - 2³ = 161133047 is a prime.

It is a super-2 number, since 2×161133055² = 51927722827266050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39256 + ... + 43165.

It is an arithmetic number, because the mean of its divisors is an integer number (13352364).

Almost surely, 2^161133055 is an apocalyptic number.

161133055 is a deficient number, since it is larger than the sum of its proper divisors (52504769).

161133055 is a wasteful number, since it uses less digits than its factorization.

161133055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82466.

The product of its (nonzero) digits is 1350, while the sum is 25.

The square root of 161133055 is about 12693.8195591398. The cubic root of 161133055 is about 544.1620036805.

The spelling of 161133055 in words is "one hundred sixty-one million, one hundred thirty-three thousand, fifty-five".