15980137 has 4 divisors (see below), whose sum is σ = 15993556. Its totient is φ = 15966720.

The previous prime is 15980123. The next prime is 15980149. The reversal of 15980137 is 73108951.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73108951 = 101 ⋅723851.

It can be written as a sum of positive squares in 2 ways, for example, as 7123561 + 8856576 = 2669^2 + 2976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15980137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15980117) 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, 4728 + ... + 7369.

It is an arithmetic number, because the mean of its divisors is an integer number (3998389).

Almost surely, 2^15980137 is an apocalyptic number.

It is an amenable number.

15980137 is a deficient number, since it is larger than the sum of its proper divisors (13419).

15980137 is a wasteful number, since it uses less digits than its factorization.

15980137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13418.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 15980137 is about 3997.5163539378. The cubic root of 15980137 is about 251.8798925833.

The spelling of 15980137 in words is "fifteen million, nine hundred eighty thousand, one hundred thirty-seven".