52528993 has 8 divisors (see below), whose sum is σ = 57357216. Its totient is φ = 47709600.

The previous prime is 52528981. The next prime is 52529039. The reversal of 52528993 is 39982525.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 52528993 - 2⁵ = 52528961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52528933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20005 + ... + 22477.

It is an arithmetic number, because the mean of its divisors is an integer number (7169652).

Almost surely, 2^52528993 is an apocalyptic number.

It is an amenable number.

52528993 is a deficient number, since it is larger than the sum of its proper divisors (4828223).

52528993 is a wasteful number, since it uses less digits than its factorization.

52528993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4415.

The product of its digits is 194400, while the sum is 43.

The square root of 52528993 is about 7247.6888040257. The cubic root of 52528993 is about 374.5125352087.

The spelling of 52528993 in words is "fifty-two million, five hundred twenty-eight thousand, nine hundred ninety-three".