149051997 has 12 divisors (see below), whose sum is σ = 215726940. Its totient is φ = 99169728.

The previous prime is 149051989. The next prime is 149052031. The reversal of 149051997 is 799150941.

149051997 is a `hidden beast` number, since 1 + 49 + 0 + 519 + 97 = 666.

149051997 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 2 ways, for example, as 46049796 + 103002201 = 6786^2 + 10149^2 .

It is not a de Polignac number, because 149051997 - 2³ = 149051989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149051977) 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, 11688 + ... + 20849.

It is an arithmetic number, because the mean of its divisors is an integer number (17977245).

Almost surely, 2^149051997 is an apocalyptic number.

It is an amenable number.

149051997 is a deficient number, since it is larger than the sum of its proper divisors (66674943).

149051997 is a wasteful number, since it uses less digits than its factorization.

149051997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33052 (or 33049 counting only the distinct ones).

The product of its (nonzero) digits is 102060, while the sum is 45.

The square root of 149051997 is about 12208.6853100569. The cubic root of 149051997 is about 530.2075809638.

The spelling of 149051997 in words is "one hundred forty-nine million, fifty-one thousand, nine hundred ninety-seven".