52815559 has 2 divisors, whose sum is σ = 52815560. Its totient is φ = 52815558.

The previous prime is 52815557. The next prime is 52815589. The reversal of 52815559 is 95551825.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52815559 - 2¹ = 52815557 is a prime.

Together with 52815557, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52815557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26407779 + 26407780.

It is an arithmetic number, because the mean of its divisors is an integer number (26407780).

Almost surely, 2^52815559 is an apocalyptic number.

52815559 is a deficient number, since it is larger than the sum of its proper divisors (1).

52815559 is an equidigital number, since it uses as much as digits as its factorization.

52815559 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90000, while the sum is 40.

The square root of 52815559 is about 7267.4313894250. The cubic root of 52815559 is about 375.1923374814.

The spelling of 52815559 in words is "fifty-two million, eight hundred fifteen thousand, five hundred fifty-nine".