149499523 has 2 divisors, whose sum is σ = 149499524. Its totient is φ = 149499522.

The previous prime is 149499503. The next prime is 149499551. The reversal of 149499523 is 325994941.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149499523 - 2²¹ = 147402371 is a prime.

It is not a weakly prime, because it can be changed into another prime (149499503) 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 as a sum of consecutive naturals, namely, 74749761 + 74749762.

It is an arithmetic number, because the mean of its divisors is an integer number (74749762).

Almost surely, 2^149499523 is an apocalyptic number.

149499523 is a deficient number, since it is larger than the sum of its proper divisors (1).

149499523 is an equidigital number, since it uses as much as digits as its factorization.

149499523 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 46.

The square root of 149499523 is about 12226.9997546414. Note that the first 3 decimals coincide. The cubic root of 149499523 is about 530.7376970753.

The spelling of 149499523 in words is "one hundred forty-nine million, four hundred ninety-nine thousand, five hundred twenty-three".