15623941 has 2 divisors, whose sum is σ = 15623942. Its totient is φ = 15623940.

The previous prime is 15623893. The next prime is 15623981. The reversal of 15623941 is 14932651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9641025 + 5982916 = 3105^2 + 2446^2 .

It is a cyclic number.

It is not a de Polignac number, because 15623941 - 2¹³ = 15615749 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15623981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7811970 + 7811971.

It is an arithmetic number, because the mean of its divisors is an integer number (7811971).

Almost surely, 2^15623941 is an apocalyptic number.

It is an amenable number.

15623941 is a deficient number, since it is larger than the sum of its proper divisors (1).

15623941 is an equidigital number, since it uses as much as digits as its factorization.

15623941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 31.

The square root of 15623941 is about 3952.7131188590. The cubic root of 15623941 is about 249.9943518724.

The spelling of 15623941 in words is "fifteen million, six hundred twenty-three thousand, nine hundred forty-one".