15138173 has 4 divisors (see below), whose sum is σ = 15153888. Its totient is φ = 15122460.

The previous prime is 15138139. The next prime is 15138197. The reversal of 15138173 is 37183151.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15138173 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15138103) 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, 6311 + ... + 8372.

It is an arithmetic number, because the mean of its divisors is an integer number (3788472).

Almost surely, 2^15138173 is an apocalyptic number.

It is an amenable number.

15138173 is a deficient number, since it is larger than the sum of its proper divisors (15715).

15138173 is a wasteful number, since it uses less digits than its factorization.

15138173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15714.

The product of its digits is 2520, while the sum is 29.

The square root of 15138173 is about 3890.7805129562. The cubic root of 15138173 is about 247.3761472629.

The spelling of 15138173 in words is "fifteen million, one hundred thirty-eight thousand, one hundred seventy-three".