149912556 has 12 divisors (see below), whose sum is σ = 349795992. Its totient is φ = 49970848.

The previous prime is 149912537. The next prime is 149912573. The reversal of 149912556 is 655219941.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6246345 + ... + 6246368.

It is an arithmetic number, because the mean of its divisors is an integer number (29149666).

Almost surely, 2^149912556 is an apocalyptic number.

It is an amenable number.

149912556 is an abundant number, since it is smaller than the sum of its proper divisors (199883436).

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

149912556 is a wasteful number, since it uses less digits than its factorization.

149912556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12492720 (or 12492718 counting only the distinct ones).

The product of its digits is 97200, while the sum is 42.

The square root of 149912556 is about 12243.8783071378. The cubic root of 149912556 is about 531.2260166151.

The spelling of 149912556 in words is "one hundred forty-nine million, nine hundred twelve thousand, five hundred fifty-six".