15117983 has 12 divisors (see below), whose sum is σ = 15892008. Its totient is φ = 14372400.

The previous prime is 15117979. The next prime is 15117989. The reversal of 15117983 is 38971151.

It is not a de Polignac number, because 15117983 - 2² = 15117979 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15117989) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 149633 + ... + 149733.

It is an arithmetic number, because the mean of its divisors is an integer number (1324334).

Almost surely, 2^15117983 is an apocalyptic number.

15117983 is a deficient number, since it is larger than the sum of its proper divisors (774025).

15117983 is an equidigital number, since it uses as much as digits as its factorization.

15117983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262 (or 203 counting only the distinct ones).

The product of its digits is 7560, while the sum is 35.

The square root of 15117983 is about 3888.1850521805. The cubic root of 15117983 is about 247.2661219540.

The spelling of 15117983 in words is "fifteen million, one hundred seventeen thousand, nine hundred eighty-three".