161042655 has 16 divisors (see below), whose sum is σ = 266554080. Its totient is φ = 82927488.

The previous prime is 161042641. The next prime is 161042669. The reversal of 161042655 is 556240161.

It is an interprime number because it is at equal distance from previous prime (161042641) and next prime (161042669).

It is not a de Polignac number, because 161042655 - 2⁴ = 161042639 is a prime.

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, 184672 + ... + 185541.

It is an arithmetic number, because the mean of its divisors is an integer number (16659630).

Almost surely, 2^161042655 is an apocalyptic number.

161042655 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

161042655 is a deficient number, since it is larger than the sum of its proper divisors (105511425).

161042655 is a wasteful number, since it uses less digits than its factorization.

161042655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370250.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 161042655 is about 12690.2582716035. The cubic root of 161042655 is about 544.0602214456.

The spelling of 161042655 in words is "one hundred sixty-one million, forty-two thousand, six hundred fifty-five".