154261321 has 2 divisors, whose sum is σ = 154261322. Its totient is φ = 154261320.

The previous prime is 154261309. The next prime is 154261351. The reversal of 154261321 is 123162451.

It is a happy number.

154261321 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 can be written as a sum of positive squares in only one way, i.e., 100400400 + 53860921 = 10020^2 + 7339^2 .

It is an emirp because it is prime and its reverse (123162451) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 154261321 - 2⁷ = 154261193 is a prime.

It is not a weakly prime, because it can be changed into another prime (154261351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77130660 + 77130661.

It is an arithmetic number, because the mean of its divisors is an integer number (77130661).

Almost surely, 2^154261321 is an apocalyptic number.

It is an amenable number.

154261321 is a deficient number, since it is larger than the sum of its proper divisors (1).

154261321 is an equidigital number, since it uses as much as digits as its factorization.

154261321 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 25.

The square root of 154261321 is about 12420.1981063105. The cubic root of 154261321 is about 536.3138535107.

The spelling of 154261321 in words is "one hundred fifty-four million, two hundred sixty-one thousand, three hundred twenty-one".