15131573 has 2 divisors, whose sum is σ = 15131574. Its totient is φ = 15131572.

The previous prime is 15131563. The next prime is 15131609. The reversal of 15131573 is 37513151.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8282884 + 6848689 = 2878^2 + 2617^2 .

It is a cyclic number.

It is not a de Polignac number, because 15131573 - 2²⁰ = 14082997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15131563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7565786 + 7565787.

It is an arithmetic number, because the mean of its divisors is an integer number (7565787).

Almost surely, 2^15131573 is an apocalyptic number.

It is an amenable number.

15131573 is a deficient number, since it is larger than the sum of its proper divisors (1).

15131573 is an equidigital number, since it uses as much as digits as its factorization.

15131573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1575, while the sum is 26.

The square root of 15131573 is about 3889.9322616210. The cubic root of 15131573 is about 247.3401913629.

The spelling of 15131573 in words is "fifteen million, one hundred thirty-one thousand, five hundred seventy-three".