52645559 has 4 divisors (see below), whose sum is σ = 52674216. Its totient is φ = 52616904.

The previous prime is 52645531. The next prime is 52645609. The reversal of 52645559 is 95554625.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52645559 - 2⁸ = 52645303 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52645519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11369 + ... + 15314.

It is an arithmetic number, because the mean of its divisors is an integer number (13168554).

Almost surely, 2^52645559 is an apocalyptic number.

52645559 is a deficient number, since it is larger than the sum of its proper divisors (28657).

52645559 is a wasteful number, since it uses less digits than its factorization.

52645559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28656.

The product of its digits is 270000, while the sum is 41.

The square root of 52645559 is about 7255.7259457617. The cubic root of 52645559 is about 374.7893548837.

The spelling of 52645559 in words is "fifty-two million, six hundred forty-five thousand, five hundred fifty-nine".