16971291 has 24 divisors (see below), whose sum is σ = 25758720. Its totient is φ = 10753200.

The previous prime is 16971281. The next prime is 16971307. The reversal of 16971291 is 19217961.

It is not a de Polignac number, because 16971291 - 2¹¹ = 16969243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16971211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15946 + ... + 16976.

It is an arithmetic number, because the mean of its divisors is an integer number (1073280).

Almost surely, 2^16971291 is an apocalyptic number.

16971291 is a deficient number, since it is larger than the sum of its proper divisors (8787429).

16971291 is a wasteful number, since it uses less digits than its factorization.

16971291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1127 (or 1124 counting only the distinct ones).

The product of its digits is 6804, while the sum is 36.

The square root of 16971291 is about 4119.6226768965. The cubic root of 16971291 is about 256.9833345237.

The spelling of 16971291 in words is "sixteen million, nine hundred seventy-one thousand, two hundred ninety-one".