13975537 has 2 divisors, whose sum is σ = 13975538. Its totient is φ = 13975536.

The previous prime is 13975531. The next prime is 13975541. The reversal of 13975537 is 73557931.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10137856 + 3837681 = 3184^2 + 1959^2 .

It is an emirp because it is prime and its reverse (73557931) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13975537 - 2¹⁵ = 13942769 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13975537.

It is not a weakly prime, because it can be changed into another prime (13975531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6987768 + 6987769.

It is an arithmetic number, because the mean of its divisors is an integer number (6987769).

Almost surely, 2^13975537 is an apocalyptic number.

It is an amenable number.

13975537 is a deficient number, since it is larger than the sum of its proper divisors (1).

13975537 is an equidigital number, since it uses as much as digits as its factorization.

13975537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99225, while the sum is 40.

The square root of 13975537 is about 3738.3869516143. The cubic root of 13975537 is about 240.8737652638.

The spelling of 13975537 in words is "thirteen million, nine hundred seventy-five thousand, five hundred thirty-seven".