13475569 has 2 divisors, whose sum is σ = 13475570. Its totient is φ = 13475568.

The previous prime is 13475563. The next prime is 13475573. The reversal of 13475569 is 96557431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13046544 + 429025 = 3612^2 + 655^2 .

It is an emirp because it is prime and its reverse (96557431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 13475569 - 2⁹ = 13475057 is a prime.

It is a super-2 number, since 2×13475569² = 363181919747522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (13475563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6737784 + 6737785.

It is an arithmetic number, because the mean of its divisors is an integer number (6737785).

Almost surely, 2^13475569 is an apocalyptic number.

It is an amenable number.

13475569 is a deficient number, since it is larger than the sum of its proper divisors (1).

13475569 is an equidigital number, since it uses as much as digits as its factorization.

13475569 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 40.

The square root of 13475569 is about 3670.9084706650. The cubic root of 13475569 is about 237.9664347835.

The spelling of 13475569 in words is "thirteen million, four hundred seventy-five thousand, five hundred sixty-nine".