161474550 has 48 divisors (see below), whose sum is σ = 401565072. Its totient is φ = 42940800.

The previous prime is 161474501. The next prime is 161474633. The reversal of 161474550 is 55474161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61872 + ... + 64428.

It is an arithmetic number, because the mean of its divisors is an integer number (8365939).

Almost surely, 2^161474550 is an apocalyptic number.

161474550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161474550 is an abundant number, since it is smaller than the sum of its proper divisors (240090522).

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

161474550 is a wasteful number, since it uses less digits than its factorization.

161474550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2993 (or 2988 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The square root of 161474550 is about 12707.2636708302. The cubic root of 161474550 is about 544.5461530410.

The spelling of 161474550 in words is "one hundred sixty-one million, four hundred seventy-four thousand, five hundred fifty".