161057732 has 12 divisors (see below), whose sum is σ = 307473936. Its totient is φ = 73208040.

The previous prime is 161057723. The next prime is 161057773. The reversal of 161057732 is 237750161.

It is a super-3 number, since 3×161057732³ (a number of 26 digits) contains 333 as substring.

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, 1830158 + ... + 1830245.

It is an arithmetic number, because the mean of its divisors is an integer number (25622828).

Almost surely, 2^161057732 is an apocalyptic number.

It is an amenable number.

161057732 is a deficient number, since it is larger than the sum of its proper divisors (146416204).

161057732 is a wasteful number, since it uses less digits than its factorization.

161057732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3660418 (or 3660416 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 161057732 is about 12690.8522960438. The cubic root of 161057732 is about 544.0771994319.

The spelling of 161057732 in words is "one hundred sixty-one million, fifty-seven thousand, seven hundred thirty-two".