161123452 has 12 divisors (see below), whose sum is σ = 322246960. Its totient is φ = 69052896.

The previous prime is 161123429. The next prime is 161123453. The reversal of 161123452 is 254321161.

It is a happy number.

161123452 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

161123452 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161123453) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2877177 + ... + 2877232.

Almost surely, 2^161123452 is an apocalyptic number.

It is an amenable number.

161123452 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

161123452 is a wasteful number, since it uses less digits than its factorization.

161123452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5754420 (or 5754418 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 161123452 is about 12693.4412985604. The cubic root of 161123452 is about 544.1511933773.

The spelling of 161123452 in words is "one hundred sixty-one million, one hundred twenty-three thousand, four hundred fifty-two".