149567441 has 2 divisors, whose sum is σ = 149567442. Its totient is φ = 149567440.

The previous prime is 149567401. The next prime is 149567443. The reversal of 149567441 is 144765941.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 120450625 + 29116816 = 10975^2 + 5396^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-149567441 is a prime.

It is a Sophie Germain prime.

Together with 149567443, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (149567443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74783720 + 74783721.

It is an arithmetic number, because the mean of its divisors is an integer number (74783721).

Almost surely, 2^149567441 is an apocalyptic number.

It is an amenable number.

149567441 is a deficient number, since it is larger than the sum of its proper divisors (1).

149567441 is an equidigital number, since it uses as much as digits as its factorization.

149567441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 41.

The square root of 149567441 is about 12229.7768172604. The cubic root of 149567441 is about 530.8180567199.

The spelling of 149567441 in words is "one hundred forty-nine million, five hundred sixty-seven thousand, four hundred forty-one".