53508569 has 2 divisors, whose sum is σ = 53508570. Its totient is φ = 53508568.

The previous prime is 53508563. The next prime is 53508577. The reversal of 53508569 is 96580535.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49182169 + 4326400 = 7013^2 + 2080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53508569 is a prime.

It is a super-2 number, since 2×53508569² = 5726333912855522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53508563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26754284 + 26754285.

It is an arithmetic number, because the mean of its divisors is an integer number (26754285).

Almost surely, 2^53508569 is an apocalyptic number.

It is an amenable number.

53508569 is a deficient number, since it is larger than the sum of its proper divisors (1).

53508569 is an equidigital number, since it uses as much as digits as its factorization.

53508569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 53508569 is about 7314.9551604914. The cubic root of 53508569 is about 376.8262185504.

The spelling of 53508569 in words is "fifty-three million, five hundred eight thousand, five hundred sixty-nine".