161166224 has 20 divisors (see below), whose sum is σ = 323028060. Its totient is φ = 77804160.

The previous prime is 161166169. The next prime is 161166233. The reversal of 161166224 is 422661161.

It can be written as a sum of positive squares in 2 ways, for example, as 114490000 + 46676224 = 10700^2 + 6832^2 .

It is a Harshad number since it is a multiple of its sum of digits (29).

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 3 ways as a sum of consecutive naturals, for example, 173207 + ... + 174134.

It is an arithmetic number, because the mean of its divisors is an integer number (16151403).

Almost surely, 2^161166224 is an apocalyptic number.

It is an amenable number.

161166224 is an abundant number, since it is smaller than the sum of its proper divisors (161861836).

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

161166224 is a wasteful number, since it uses less digits than its factorization.

161166224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347378 (or 347372 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 161166224 is about 12695.1259938608. The cubic root of 161166224 is about 544.1993394322.

The spelling of 161166224 in words is "one hundred sixty-one million, one hundred sixty-six thousand, two hundred twenty-four".