15072137 has 4 divisors (see below), whose sum is σ = 15083796. Its totient is φ = 15060480.

The previous prime is 15072131. The next prime is 15072191. The reversal of 15072137 is 73127051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73127051 = 23 ⋅3179437.

It can be written as a sum of positive squares in 2 ways, for example, as 8202496 + 6869641 = 2864^2 + 2621^2 .

It is a cyclic number.

It is not a de Polignac number, because 15072137 - 2²⁰ = 14023561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15072131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3608 + ... + 6569.

It is an arithmetic number, because the mean of its divisors is an integer number (3770949).

Almost surely, 2^15072137 is an apocalyptic number.

It is an amenable number.

15072137 is a deficient number, since it is larger than the sum of its proper divisors (11659).

15072137 is a wasteful number, since it uses less digits than its factorization.

15072137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11658.

The product of its (nonzero) digits is 1470, while the sum is 26.

The square root of 15072137 is about 3882.2850230245. The cubic root of 15072137 is about 247.0159201221.

Adding to 15072137 its reverse (73127051), we get a palindrome (88199188).

The spelling of 15072137 in words is "fifteen million, seventy-two thousand, one hundred thirty-seven".