15622973 has 2 divisors, whose sum is σ = 15622974. Its totient is φ = 15622972.

The previous prime is 15622951. The next prime is 15622979. The reversal of 15622973 is 37922651.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8076964 + 7546009 = 2842^2 + 2747^2 .

It is a cyclic number.

It is not a de Polignac number, because 15622973 - 2¹⁴ = 15606589 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15622979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7811486 + 7811487.

It is an arithmetic number, because the mean of its divisors is an integer number (7811487).

Almost surely, 2^15622973 is an apocalyptic number.

It is an amenable number.

15622973 is a deficient number, since it is larger than the sum of its proper divisors (1).

15622973 is an equidigital number, since it uses as much as digits as its factorization.

15622973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 22680, while the sum is 35.

The square root of 15622973 is about 3952.5906694218. The cubic root of 15622973 is about 249.9891888658.

The spelling of 15622973 in words is "fifteen million, six hundred twenty-two thousand, nine hundred seventy-three".