161166552 has 16 divisors (see below), whose sum is σ = 402916440. Its totient is φ = 53722176.

The previous prime is 161166547. The next prime is 161166559. The reversal of 161166552 is 255661161.

161166552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161166559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3357613 + ... + 3357660.

Almost surely, 2^161166552 is an apocalyptic number.

161166552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

161166552 is an abundant number, since it is smaller than the sum of its proper divisors (241749888).

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

161166552 is a wasteful number, since it uses less digits than its factorization.

161166552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6715282 (or 6715278 counting only the distinct ones).

The product of its digits is 10800, while the sum is 33.

The square root of 161166552 is about 12695.1389121978. The cubic root of 161166552 is about 544.1997086106.

The spelling of 161166552 in words is "one hundred sixty-one million, one hundred sixty-six thousand, five hundred fifty-two".