52398987 has 4 divisors (see below), whose sum is σ = 69865320. Its totient is φ = 34932656.

The previous prime is 52398977. The next prime is 52398989. The reversal of 52398987 is 78989325.

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 52398987 - 2²⁴ = 35621771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52398989) 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, 8733162 + ... + 8733167.

It is an arithmetic number, because the mean of its divisors is an integer number (17466330).

Almost surely, 2^52398987 is an apocalyptic number.

52398987 is a deficient number, since it is larger than the sum of its proper divisors (17466333).

52398987 is a wasteful number, since it uses less digits than its factorization.

52398987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17466332.

The product of its digits is 1088640, while the sum is 51.

The square root of 52398987 is about 7238.7144576921. The cubic root of 52398987 is about 374.2033148683.

The spelling of 52398987 in words is "fifty-two million, three hundred ninety-eight thousand, nine hundred eighty-seven".