151665972 has 24 divisors (see below), whose sum is σ = 354621792. Its totient is φ = 50450400.

The previous prime is 151665967. The next prime is 151665989. The reversal of 151665972 is 279566151.

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, 6979 + ... + 18762.

It is an arithmetic number, because the mean of its divisors is an integer number (14775908).

Almost surely, 2^151665972 is an apocalyptic number.

151665972 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

151665972 is an abundant number, since it is smaller than the sum of its proper divisors (202955820).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

151665972 is a wasteful number, since it uses less digits than its factorization.

151665972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26239 (or 26237 counting only the distinct ones).

The product of its digits is 113400, while the sum is 42.

The square root of 151665972 is about 12315.2739311799. The cubic root of 151665972 is about 533.2891128267.

The spelling of 151665972 in words is "one hundred fifty-one million, six hundred sixty-five thousand, nine hundred seventy-two".