161266524 has 48 divisors (see below), whose sum is σ = 393700608. Its totient is φ = 51280768.

The previous prime is 161266519. The next prime is 161266537. The reversal of 161266524 is 425662161.

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, 169819 + ... + 170765.

It is an arithmetic number, because the mean of its divisors is an integer number (8202096).

Almost surely, 2^161266524 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 161266524, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (196850304).

161266524 is an abundant number, since it is smaller than the sum of its proper divisors (232434084).

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

161266524 is a wasteful number, since it uses less digits than its factorization.

161266524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594 (or 1592 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 161266524 is about 12699.0757143975. The cubic root of 161266524 is about 544.3122081487.

The spelling of 161266524 in words is "one hundred sixty-one million, two hundred sixty-six thousand, five hundred twenty-four".