161351560 has 32 divisors (see below), whose sum is σ = 366575040. Its totient is φ = 63912384.

The previous prime is 161351549. The next prime is 161351579. The reversal of 161351560 is 65153161.

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, 15462 + ... + 23701.

It is an arithmetic number, because the mean of its divisors is an integer number (11455470).

Almost surely, 2^161351560 is an apocalyptic number.

161351560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161351560 is an abundant number, since it is smaller than the sum of its proper divisors (205223480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

161351560 is a wasteful number, since it uses less digits than its factorization.

161351560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39277 (or 39273 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 161351560 is about 12702.4233908337. The cubic root of 161351560 is about 544.4078634623.

The spelling of 161351560 in words is "one hundred sixty-one million, three hundred fifty-one thousand, five hundred sixty".