161335256 has 32 divisors (see below), whose sum is σ = 308251440. Its totient is φ = 79147008.

The previous prime is 161335211. The next prime is 161335297. The reversal of 161335256 is 652533161.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131960 + ... + 133176.

Almost surely, 2^161335256 is an apocalyptic number.

It is an amenable number.

161335256 is a deficient number, since it is larger than the sum of its proper divisors (146916184).

161335256 is a wasteful number, since it uses less digits than its factorization.

161335256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1523 (or 1519 counting only the distinct ones).

The product of its digits is 16200, while the sum is 32.

The square root of 161335256 is about 12701.7816073179. The cubic root of 161335256 is about 544.3895260199.

The spelling of 161335256 in words is "one hundred sixty-one million, three hundred thirty-five thousand, two hundred fifty-six".