15172137 has 8 divisors (see below), whose sum is σ = 22477280. Its totient is φ = 10114740.

The previous prime is 15172099. The next prime is 15172153. The reversal of 15172137 is 73127151.

It is a happy number.

It is not a de Polignac number, because 15172137 - 2¹⁰ = 15171113 is a prime.

It is a super-2 number, since 2×15172137² = 460387482293538, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 561931 = 15172137 / (1 + 5 + 1 + 7 + 2 + 1 + 3 + 7).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15172137.

It is not an unprimeable number, because it can be changed into a prime (15177137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 280939 + ... + 280992.

It is an arithmetic number, because the mean of its divisors is an integer number (2809660).

Almost surely, 2^15172137 is an apocalyptic number.

It is an amenable number.

15172137 is a deficient number, since it is larger than the sum of its proper divisors (7305143).

15172137 is an equidigital number, since it uses as much as digits as its factorization.

15172137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 561940 (or 561934 counting only the distinct ones).

The product of its digits is 1470, while the sum is 27.

The square root of 15172137 is about 3895.1427444960. The cubic root of 15172137 is about 247.5610134243.

Adding to 15172137 its reverse (73127151), we get a palindrome (88299288).

The spelling of 15172137 in words is "fifteen million, one hundred seventy-two thousand, one hundred thirty-seven".