15990271 has 6 divisors (see below), whose sum is σ = 17576216. Its totient is φ = 14536500.

The previous prime is 15990269. The next prime is 15990277. The reversal of 15990271 is 17209951.

It is not a de Polignac number, because 15990271 - 2¹ = 15990269 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 (15990277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 65955 + ... + 66196.

Almost surely, 2^15990271 is an apocalyptic number.

15990271 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

15990271 is a deficient number, since it is larger than the sum of its proper divisors (1585945).

15990271 is a wasteful number, since it uses less digits than its factorization.

15990271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132173 (or 132162 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 34.

The square root of 15990271 is about 3998.7836900738. The cubic root of 15990271 is about 251.9331255738.

It can be divided in two parts, 15990 and 271, that added together give a palindrome (16261).

The spelling of 15990271 in words is "fifteen million, nine hundred ninety thousand, two hundred seventy-one".