151661056 has 20 divisors (see below), whose sum is σ = 303026922. Its totient is φ = 75830272.

The previous prime is 151661047. The next prime is 151661071. The reversal of 151661056 is 650166151.

It can be written as a sum of positive squares in only one way, i.e., 120121600 + 31539456 = 10960^2 + 5616^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 147595 + ... + 148618.

Almost surely, 2^151661056 is an apocalyptic number.

151661056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

151661056 is a deficient number, since it is larger than the sum of its proper divisors (151365866).

151661056 is an frugal number, since it uses more digits than its factorization.

151661056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 296231 (or 296215 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 151661056 is about 12315.0743400111. The cubic root of 151661056 is about 533.2833508715.

The spelling of 151661056 in words is "one hundred fifty-one million, six hundred sixty-one thousand, fifty-six".