161010550 has 12 divisors (see below), whose sum is σ = 299479716. Its totient is φ = 64404200.

The previous prime is 161010491. The next prime is 161010571. The reversal of 161010550 is 55010161.

It is a super-2 number, since 2×161010550² = 51848794422605000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1610056 + ... + 1610155.

It is an arithmetic number, because the mean of its divisors is an integer number (24956643).

Almost surely, 2^161010550 is an apocalyptic number.

161010550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161010550 is a deficient number, since it is larger than the sum of its proper divisors (138469166).

161010550 is a wasteful number, since it uses less digits than its factorization.

161010550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3220223 (or 3220218 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 19.

The square root of 161010550 is about 12688.9932618786. The cubic root of 161010550 is about 544.0240649497.

The spelling of 161010550 in words is "one hundred sixty-one million, ten thousand, five hundred fifty".