149405523 has 32 divisors (see below), whose sum is σ = 212551680. Its totient is φ = 93208320.

The previous prime is 149405497. The next prime is 149405573. The reversal of 149405523 is 325504941.

It is not a de Polignac number, because 149405523 - 2¹⁰ = 149404499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (149405573) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 400365 + ... + 400737.

It is an arithmetic number, because the mean of its divisors is an integer number (6642240).

Almost surely, 2^149405523 is an apocalyptic number.

149405523 is a deficient number, since it is larger than the sum of its proper divisors (63146157).

149405523 is a wasteful number, since it uses less digits than its factorization.

149405523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539.

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 149405523 is about 12223.1551982293. The cubic root of 149405523 is about 530.6264374039.

The spelling of 149405523 in words is "one hundred forty-nine million, four hundred five thousand, five hundred twenty-three".