161743552 has 28 divisors (see below), whose sum is σ = 321377056. Its totient is φ = 80766720.

The previous prime is 161743537. The next prime is 161743553. The reversal of 161743552 is 255347161.

161743552 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×161743552² = 52321953227153408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161743553) 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, 77758 + ... + 79810.

It is an arithmetic number, because the mean of its divisors is an integer number (11477752).

Almost surely, 2^161743552 is an apocalyptic number.

It is an amenable number.

161743552 is a deficient number, since it is larger than the sum of its proper divisors (159633504).

161743552 is a wasteful number, since it uses less digits than its factorization.

161743552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3296 (or 3286 counting only the distinct ones).

The product of its digits is 25200, while the sum is 34.

The square root of 161743552 is about 12717.8438424129. The cubic root of 161743552 is about 544.8483734970.

The spelling of 161743552 in words is "one hundred sixty-one million, seven hundred forty-three thousand, five hundred fifty-two".