161451052 has 12 divisors (see below), whose sum is σ = 322902160. Its totient is φ = 69193296.

The previous prime is 161451049. The next prime is 161451067. The reversal of 161451052 is 250154161.

It is a happy number.

161451052 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

161451052 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2883027 + ... + 2883082.

Almost surely, 2^161451052 is an apocalyptic number.

It is an amenable number.

161451052 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.

161451052 is a wasteful number, since it uses less digits than its factorization.

161451052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5766120 (or 5766118 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 161451052 is about 12706.3390478926. The cubic root of 161451052 is about 544.5197373896.

The spelling of 161451052 in words is "one hundred sixty-one million, four hundred fifty-one thousand, fifty-two".