16973501 has 2 divisors, whose sum is σ = 16973502. Its totient is φ = 16973500.

The previous prime is 16973477. The next prime is 16973503. The reversal of 16973501 is 10537961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13697401 + 3276100 = 3701^2 + 1810^2 .

It is a cyclic number.

It is not a de Polignac number, because 16973501 - 2²² = 12779197 is a prime.

Together with 16973503, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p_1089716 and since 16973501 and 1089716 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16973503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8486750 + 8486751.

It is an arithmetic number, because the mean of its divisors is an integer number (8486751).

Almost surely, 2^16973501 is an apocalyptic number.

It is an amenable number.

16973501 is a deficient number, since it is larger than the sum of its proper divisors (1).

16973501 is an equidigital number, since it uses as much as digits as its factorization.

16973501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 16973501 is about 4119.8908966136. The cubic root of 16973501 is about 256.9944888218.

The spelling of 16973501 in words is "sixteen million, nine hundred seventy-three thousand, five hundred one".