161107560 has 48 divisors (see below), whose sum is σ = 523600740. Its totient is φ = 42961920.

The previous prime is 161107549. The next prime is 161107601. The reversal of 161107560 is 65701161.

It can be written as a sum of positive squares in 2 ways, for example, as 158911236 + 2196324 = 12606^2 + 1482^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 223401 + ... + 224120.

Almost surely, 2^161107560 is an apocalyptic number.

161107560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161107560 is an abundant number, since it is smaller than the sum of its proper divisors (362493180).

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

161107560 is a wasteful number, since it uses less digits than its factorization.

161107560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447538 (or 447531 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 161107560 is about 12692.8152905492. The cubic root of 161107560 is about 544.1333024682.

The spelling of 161107560 in words is "one hundred sixty-one million, one hundred seven thousand, five hundred sixty".