161590050 has 72 divisors (see below), whose sum is σ = 437000304. Its totient is φ = 42806880.

The previous prime is 161590031. The next prime is 161590067. The reversal of 161590050 is 50095161.

161590050 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161590050² = 52222688518005000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 161589996 and 161590023.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 72249 + ... + 74451.

Almost surely, 2^161590050 is an apocalyptic number.

161590050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 161590050, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (218500152).

161590050 is an abundant number, since it is smaller than the sum of its proper divisors (275410254).

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

161590050 is a wasteful number, since it uses less digits than its factorization.

161590050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2384 (or 2376 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 27.

The square root of 161590050 is about 12711.8075032625. The cubic root of 161590050 is about 544.6759569651.

The spelling of 161590050 in words is "one hundred sixty-one million, five hundred ninety thousand, fifty".