16972541 has 2 divisors, whose sum is σ = 16972542. Its totient is φ = 16972540.

The previous prime is 16972517. The next prime is 16972559. The reversal of 16972541 is 14527961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12888100 + 4084441 = 3590^2 + 2021^2 .

It is a cyclic number.

It is not a de Polignac number, because 16972541 - 2¹⁰ = 16971517 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16972741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8486270 + 8486271.

It is an arithmetic number, because the mean of its divisors is an integer number (8486271).

Almost surely, 2^16972541 is an apocalyptic number.

It is an amenable number.

16972541 is a deficient number, since it is larger than the sum of its proper divisors (1).

16972541 is an equidigital number, since it uses as much as digits as its factorization.

16972541 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 35.

The square root of 16972541 is about 4119.7743870266. The cubic root of 16972541 is about 256.9896436348.

The spelling of 16972541 in words is "sixteen million, nine hundred seventy-two thousand, five hundred forty-one".