16975957 has 2 divisors, whose sum is σ = 16975958. Its totient is φ = 16975956.

The previous prime is 16975921. The next prime is 16976023. The reversal of 16975957 is 75957961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16719921 + 256036 = 4089^2 + 506^2 .

It is an emirp because it is prime and its reverse (75957961) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16975957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16975957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16975157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8487978 + 8487979.

It is an arithmetic number, because the mean of its divisors is an integer number (8487979).

Almost surely, 2^16975957 is an apocalyptic number.

It is an amenable number.

16975957 is a deficient number, since it is larger than the sum of its proper divisors (1).

16975957 is an equidigital number, since it uses as much as digits as its factorization.

16975957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 595350, while the sum is 49.

The square root of 16975957 is about 4120.1889519778. The cubic root of 16975957 is about 257.0068835938.

The spelling of 16975957 in words is "sixteen million, nine hundred seventy-five thousand, nine hundred fifty-seven".