149497321 has 2 divisors, whose sum is σ = 149497322. Its totient is φ = 149497320.

The previous prime is 149497289. The next prime is 149497333. The reversal of 149497321 is 123794941.

149497321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 149328400 + 168921 = 12220^2 + 411^2 .

It is a cyclic number.

It is not a de Polignac number, because 149497321 - 2⁵ = 149497289 is a prime.

It is not a weakly prime, because it can be changed into another prime (149497351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74748660 + 74748661.

It is an arithmetic number, because the mean of its divisors is an integer number (74748661).

Almost surely, 2^149497321 is an apocalyptic number.

It is an amenable number.

149497321 is a deficient number, since it is larger than the sum of its proper divisors (1).

149497321 is an equidigital number, since it uses as much as digits as its factorization.

149497321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 40.

The square root of 149497321 is about 12226.9097076898. The cubic root of 149497321 is about 530.7350912919.

The spelling of 149497321 in words is "one hundred forty-nine million, four hundred ninety-seven thousand, three hundred twenty-one".