15973541 has 2 divisors, whose sum is σ = 15973542. Its totient is φ = 15973540.

The previous prime is 15973499. The next prime is 15973571. The reversal of 15973541 is 14537951.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9897316 + 6076225 = 3146^2 + 2465^2 .

It is a cyclic number.

It is not a de Polignac number, because 15973541 - 2²² = 11779237 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 (15973571) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7986770 + 7986771.

It is an arithmetic number, because the mean of its divisors is an integer number (7986771).

Almost surely, 2^15973541 is an apocalyptic number.

It is an amenable number.

15973541 is a deficient number, since it is larger than the sum of its proper divisors (1).

15973541 is an equidigital number, since it uses as much as digits as its factorization.

15973541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 35.

The square root of 15973541 is about 3996.6912565271. The cubic root of 15973541 is about 251.8452322962.

The spelling of 15973541 in words is "fifteen million, nine hundred seventy-three thousand, five hundred forty-one".