156628441 has 2 divisors, whose sum is σ = 156628442. Its totient is φ = 156628440.

The previous prime is 156628369. The next prime is 156628499. The reversal of 156628441 is 144826651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121771225 + 34857216 = 11035^2 + 5904^2 .

It is a cyclic number.

It is not a de Polignac number, because 156628441 - 2⁹ = 156627929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 156628441.

It is not a weakly prime, because it can be changed into another prime (156628741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78314220 + 78314221.

It is an arithmetic number, because the mean of its divisors is an integer number (78314221).

Almost surely, 2^156628441 is an apocalyptic number.

It is an amenable number.

156628441 is a deficient number, since it is larger than the sum of its proper divisors (1).

156628441 is an equidigital number, since it uses as much as digits as its factorization.

156628441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46080, while the sum is 37.

The square root of 156628441 is about 12515.1284851575. The cubic root of 156628441 is about 539.0431626715.

The spelling of 156628441 in words is "one hundred fifty-six million, six hundred twenty-eight thousand, four hundred forty-one".