161310056 has 16 divisors (see below), whose sum is σ = 304634400. Its totient is φ = 80074224.

The previous prime is 161310049. The next prime is 161310067. The reversal of 161310056 is 650013161.

It is a happy number.

161310056 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71420 + ... + 73643.

It is an arithmetic number, because the mean of its divisors is an integer number (19039650).

Almost surely, 2^161310056 is an apocalyptic number.

It is an amenable number.

161310056 is a deficient number, since it is larger than the sum of its proper divisors (143324344).

161310056 is a wasteful number, since it uses less digits than its factorization.

161310056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145208 (or 145204 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 161310056 is about 12700.7895817544. The cubic root of 161310056 is about 544.3611806338.

The spelling of 161310056 in words is "one hundred sixty-one million, three hundred ten thousand, fifty-six".