161506752 has 56 divisors (see below), whose sum is σ = 466173312. Its totient is φ = 48940800.

The previous prime is 161506729. The next prime is 161506799. The reversal of 161506752 is 257605161.

161506752 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

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, 36124 + ... + 40347.

Almost surely, 2^161506752 is an apocalyptic number.

161506752 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161506752 is an abundant number, since it is smaller than the sum of its proper divisors (304666560).

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

161506752 is a wasteful number, since it uses less digits than its factorization.

161506752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76497 (or 76487 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 33.

The square root of 161506752 is about 12708.5306782492. The cubic root of 161506752 is about 544.5823492706.

The spelling of 161506752 in words is "one hundred sixty-one million, five hundred six thousand, seven hundred fifty-two".