161630052 has 24 divisors (see below), whose sum is σ = 381376800. Its totient is φ = 53270976.

The previous prime is 161630041. The next prime is 161630071. The reversal of 161630052 is 250036161.

It is a super-2 number, since 2×161630052² = 52248547419045408, which contains 22 as substring.

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, 74602 + ... + 76737.

It is an arithmetic number, because the mean of its divisors is an integer number (15890700).

Almost surely, 2^161630052 is an apocalyptic number.

161630052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161630052 is an abundant number, since it is smaller than the sum of its proper divisors (219746748).

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

161630052 is a wasteful number, since it uses less digits than its factorization.

161630052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151435 (or 151433 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 161630052 is about 12713.3808249419. The cubic root of 161630052 is about 544.7208985317.

The spelling of 161630052 in words is "one hundred sixty-one million, six hundred thirty thousand, fifty-two".