149568523 has 16 divisors (see below), whose sum is σ = 167239296. Its totient is φ = 132877440.

The previous prime is 149568511. The next prime is 149568527. The reversal of 149568523 is 325865941.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149568523 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 149568523.

It is not an unprimeable number, because it can be changed into a prime (149568527) 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 15 ways as a sum of consecutive naturals, for example, 35265 + ... + 39277.

It is an arithmetic number, because the mean of its divisors is an integer number (10452456).

Almost surely, 2^149568523 is an apocalyptic number.

149568523 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

149568523 is a deficient number, since it is larger than the sum of its proper divisors (17670773).

149568523 is a wasteful number, since it uses less digits than its factorization.

149568523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4134.

The product of its digits is 259200, while the sum is 43.

The square root of 149568523 is about 12229.8210534742. The cubic root of 149568523 is about 530.8193367305.

The spelling of 149568523 in words is "one hundred forty-nine million, five hundred sixty-eight thousand, five hundred twenty-three".