161157516 has 24 divisors (see below), whose sum is σ = 404960304. Its totient is φ = 49586880.

The previous prime is 161157473. The next prime is 161157523. The reversal of 161157516 is 615751161.

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, 516375 + ... + 516686.

It is an arithmetic number, because the mean of its divisors is an integer number (16873346).

Almost surely, 2^161157516 is an apocalyptic number.

It is an amenable number.

161157516 is an abundant number, since it is smaller than the sum of its proper divisors (243802788).

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

161157516 is a wasteful number, since it uses less digits than its factorization.

161157516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033081 (or 1033079 counting only the distinct ones).

The product of its digits is 6300, while the sum is 33.

The square root of 161157516 is about 12694.7830229587. The cubic root of 161157516 is about 544.1895380129.

The spelling of 161157516 in words is "one hundred sixty-one million, one hundred fifty-seven thousand, five hundred sixteen".