52388999 has 4 divisors (see below), whose sum is σ = 56418936. Its totient is φ = 48359064.

The previous prime is 52388989. The next prime is 52389013. The reversal of 52388999 is 99988325.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-52388999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 52388999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52388989) 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, 2014949 + ... + 2014974.

It is an arithmetic number, because the mean of its divisors is an integer number (14104734).

Almost surely, 2^52388999 is an apocalyptic number.

52388999 is a deficient number, since it is larger than the sum of its proper divisors (4029937).

52388999 is a wasteful number, since it uses less digits than its factorization.

52388999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4029936.

The product of its digits is 1399680, while the sum is 53.

The square root of 52388999 is about 7238.0245233074. The cubic root of 52388999 is about 374.1795371808.

The spelling of 52388999 in words is "fifty-two million, three hundred eighty-eight thousand, nine hundred ninety-nine".