154261397 has 2 divisors, whose sum is σ = 154261398. Its totient is φ = 154261396.

The previous prime is 154261351. The next prime is 154261421. The reversal of 154261397 is 793162451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 100180081 + 54081316 = 10009^2 + 7354^2 .

It is a cyclic number.

It is not a de Polignac number, because 154261397 - 2²⁴ = 137484181 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 154261397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154261307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77130698 + 77130699.

It is an arithmetic number, because the mean of its divisors is an integer number (77130699).

Almost surely, 2^154261397 is an apocalyptic number.

It is an amenable number.

154261397 is a deficient number, since it is larger than the sum of its proper divisors (1).

154261397 is an equidigital number, since it uses as much as digits as its factorization.

154261397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 38.

The square root of 154261397 is about 12420.2011658427. The cubic root of 154261397 is about 536.3139415860.

The spelling of 154261397 in words is "one hundred fifty-four million, two hundred sixty-one thousand, three hundred ninety-seven".