149785523 has 2 divisors, whose sum is σ = 149785524. Its totient is φ = 149785522.

The previous prime is 149785481. The next prime is 149785529. The reversal of 149785523 is 325587941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149785523 - 2¹⁰ = 149784499 is a prime.

It is not a weakly prime, because it can be changed into another prime (149785529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74892761 + 74892762.

It is an arithmetic number, because the mean of its divisors is an integer number (74892762).

Almost surely, 2^149785523 is an apocalyptic number.

149785523 is a deficient number, since it is larger than the sum of its proper divisors (1).

149785523 is an equidigital number, since it uses as much as digits as its factorization.

149785523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 44.

The square root of 149785523 is about 12238.6895948872. The cubic root of 149785523 is about 531.0759239951.

The spelling of 149785523 in words is "one hundred forty-nine million, seven hundred eighty-five thousand, five hundred twenty-three".