151165906 has 12 divisors (see below), whose sum is σ = 230667822. Its totient is φ = 74298464.

The previous prime is 151165891. The next prime is 151165909. The reversal of 151165906 is 609561151.

It can be written as a sum of positive squares in only one way, i.e., 140635881 + 10530025 = 11859^2 + 3245^2 .

It is a super-2 number, since 2×151165906² = 45702262273601672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151165909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3895 + ... + 17818.

Almost surely, 2^151165906 is an apocalyptic number.

151165906 is a deficient number, since it is larger than the sum of its proper divisors (79501916).

151165906 is an equidigital number, since it uses as much as digits as its factorization.

151165906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21833 (or 21774 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 34.

The square root of 151165906 is about 12294.9544936124. The cubic root of 151165906 is about 532.7023554441.

The spelling of 151165906 in words is "one hundred fifty-one million, one hundred sixty-five thousand, nine hundred six".