151151661 has 12 divisors (see below), whose sum is σ = 218596092. Its totient is φ = 100645056.

The previous prime is 151151639. The next prime is 151151677. The reversal of 151151661 is 166151151.

It can be written as a sum of positive squares in 2 ways, for example, as 104652900 + 46498761 = 10230^2 + 6819^2 .

It is not a de Polignac number, because 151151661 - 2¹¹ = 151149613 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151151681) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2086 + ... + 17511.

It is an arithmetic number, because the mean of its divisors is an integer number (18216341).

Almost surely, 2^151151661 is an apocalyptic number.

It is an amenable number.

151151661 is a deficient number, since it is larger than the sum of its proper divisors (67444431).

151151661 is a wasteful number, since it uses less digits than its factorization.

151151661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20460 (or 20457 counting only the distinct ones).

The product of its digits is 900, while the sum is 27.

The square root of 151151661 is about 12294.3751772914. The cubic root of 151151661 is about 532.6856219896.

The spelling of 151151661 in words is "one hundred fifty-one million, one hundred fifty-one thousand, six hundred sixty-one".