52815553 has 4 divisors (see below), whose sum is σ = 60360640. Its totient is φ = 45270468.

The previous prime is 52815533. The next prime is 52815557. The reversal of 52815553 is 35551825.

52815553 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52815553 - 2¹⁷ = 52684481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52815557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3772533 + ... + 3772546.

It is an arithmetic number, because the mean of its divisors is an integer number (15090160).

Almost surely, 2^52815553 is an apocalyptic number.

It is an amenable number.

52815553 is a deficient number, since it is larger than the sum of its proper divisors (7545087).

52815553 is an equidigital number, since it uses as much as digits as its factorization.

52815553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7545086.

The product of its digits is 30000, while the sum is 34.

The square root of 52815553 is about 7267.4309766244. The cubic root of 52815553 is about 375.1923232738.

The spelling of 52815553 in words is "fifty-two million, eight hundred fifteen thousand, five hundred fifty-three".