161501356 has 24 divisors (see below), whose sum is σ = 287901936. Its totient is φ = 79252800.

The previous prime is 161501339. The next prime is 161501363. The reversal of 161501356 is 653105161.

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, 84006 + ... + 85906.

It is an arithmetic number, because the mean of its divisors is an integer number (11995914).

Almost surely, 2^161501356 is an apocalyptic number.

It is an amenable number.

161501356 is a deficient number, since it is larger than the sum of its proper divisors (126400580).

161501356 is a wasteful number, since it uses less digits than its factorization.

161501356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2289 (or 2287 counting only the distinct ones).

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

The square root of 161501356 is about 12708.3183781333. The cubic root of 161501356 is about 544.5762843042.

The spelling of 161501356 in words is "one hundred sixty-one million, five hundred one thousand, three hundred fifty-six".