151500681 has 24 divisors (see below), whose sum is σ = 225420104. Its totient is φ = 97977600.

The previous prime is 151500677. The next prime is 151500691. The reversal of 151500681 is 186005151.

151500681 is a `hidden beast` number, since 151 + 500 + 6 + 8 + 1 = 666.

151500681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 88059456 + 63441225 = 9384^2 + 7965^2 .

It is not a de Polignac number, because 151500681 - 2² = 151500677 is a prime.

It is a super-2 number, since 2×151500681² = 45904912686927522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151500691) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 199755 + ... + 200511.

Almost surely, 2^151500681 is an apocalyptic number.

It is an amenable number.

151500681 is a deficient number, since it is larger than the sum of its proper divisors (73919423).

151500681 is a wasteful number, since it uses less digits than its factorization.

151500681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1401 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 27.

The square root of 151500681 is about 12308.5612887941. The cubic root of 151500681 is about 533.0953098898.

The spelling of 151500681 in words is "one hundred fifty-one million, five hundred thousand, six hundred eighty-one".