161556050 has 48 divisors (see below), whose sum is σ = 318461760. Its totient is φ = 60805440.

The previous prime is 161556047. The next prime is 161556077. The reversal of 161556050 is 50655161.

It is a super-2 number, since 2×161556050² = 52200714583205000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163859 + ... + 164841.

It is an arithmetic number, because the mean of its divisors is an integer number (6634620).

Almost surely, 2^161556050 is an apocalyptic number.

161556050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161556050 is a deficient number, since it is larger than the sum of its proper divisors (156905710).

161556050 is a wasteful number, since it uses less digits than its factorization.

161556050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187 (or 1182 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 161556050 is about 12710.4700935882. The cubic root of 161556050 is about 544.6377527119.

The spelling of 161556050 in words is "one hundred sixty-one million, five hundred fifty-six thousand, fifty".