149851523 has 2 divisors, whose sum is σ = 149851524. Its totient is φ = 149851522.

The previous prime is 149851519. The next prime is 149851543. The reversal of 149851523 is 325158941.

It is a happy number.

149851523 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 149851523 - 2² = 149851519 is a prime.

It is not a weakly prime, because it can be changed into another prime (149851543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74925761 + 74925762.

It is an arithmetic number, because the mean of its divisors is an integer number (74925762).

Almost surely, 2^149851523 is an apocalyptic number.

149851523 is a deficient number, since it is larger than the sum of its proper divisors (1).

149851523 is an equidigital number, since it uses as much as digits as its factorization.

149851523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 38.

The square root of 149851523 is about 12241.3856650299. The cubic root of 149851523 is about 531.1539152086.

The spelling of 149851523 in words is "one hundred forty-nine million, eight hundred fifty-one thousand, five hundred twenty-three".