161455952 has 80 divisors (see below), whose sum is σ = 376047360. Its totient is φ = 65657856.

The previous prime is 161455949. The next prime is 161456003. The reversal of 161455952 is 259554161.

Its product of digits (54000) is a multiple of the sum of its prime factors (540).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600074 + ... + 600342.

It is an arithmetic number, because the mean of its divisors is an integer number (4700592).

Almost surely, 2^161455952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161455952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188023680).

161455952 is an abundant number, since it is smaller than the sum of its proper divisors (214591408).

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

161455952 is a wasteful number, since it uses less digits than its factorization.

161455952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 540 (or 534 counting only the distinct ones).

The product of its digits is 54000, while the sum is 38.

The square root of 161455952 is about 12706.5318635732. The cubic root of 161455952 is about 544.5252460143.

The spelling of 161455952 in words is "one hundred sixty-one million, four hundred fifty-five thousand, nine hundred fifty-two".