161566150 has 24 divisors (see below), whose sum is σ = 303897960. Its totient is φ = 63898560.

The previous prime is 161566133. The next prime is 161566169. The reversal of 161566150 is 51665161.

It is a super-2 number, since 2×161566150² = 52207241651645000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13704 + ... + 22603.

It is an arithmetic number, because the mean of its divisors is an integer number (12662415).

Almost surely, 2^161566150 is an apocalyptic number.

161566150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161566150 is a deficient number, since it is larger than the sum of its proper divisors (142331810).

161566150 is a wasteful number, since it uses less digits than its factorization.

161566150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36408 (or 36403 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 161566150 is about 12710.8673976248. The cubic root of 161566150 is about 544.6491021820.

The spelling of 161566150 in words is "one hundred sixty-one million, five hundred sixty-six thousand, one hundred fifty".