149513553 has 24 divisors (see below), whose sum is σ = 257667360. Its totient is φ = 85435560.

The previous prime is 149513549. The next prime is 149513579. The reversal of 149513553 is 355315941.

It is a happy number.

149513553 is a `hidden beast` number, since 1 + 4 + 95 + 13 + 553 = 666.

It is not a de Polignac number, because 149513553 - 2² = 149513549 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (149513513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55183 + ... + 57828.

It is an arithmetic number, because the mean of its divisors is an integer number (10736140).

Almost surely, 2^149513553 is an apocalyptic number.

It is an amenable number.

149513553 is a deficient number, since it is larger than the sum of its proper divisors (108153807).

149513553 is a wasteful number, since it uses less digits than its factorization.

149513553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113034 (or 113021 counting only the distinct ones).

The product of its digits is 40500, while the sum is 36.

The square root of 149513553 is about 12227.5734714619. The cubic root of 149513553 is about 530.7542991728.

The spelling of 149513553 in words is "one hundred forty-nine million, five hundred thirteen thousand, five hundred fifty-three".