52509989 has 8 divisors (see below), whose sum is σ = 62620800. Its totient is φ = 43051536.

The previous prime is 52509979. The next prime is 52509997. The reversal of 52509989 is 98990525.

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 52509989 - 2²⁴ = 35732773 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 (52509949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162914 + ... + 163235.

It is an arithmetic number, because the mean of its divisors is an integer number (7827600).

Almost surely, 2^52509989 is an apocalyptic number.

It is an amenable number.

52509989 is a deficient number, since it is larger than the sum of its proper divisors (10110811).

52509989 is a wasteful number, since it uses less digits than its factorization.

52509989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 326179.

The product of its (nonzero) digits is 291600, while the sum is 47.

The square root of 52509989 is about 7246.3776467971. The cubic root of 52509989 is about 374.4673659014.

The spelling of 52509989 in words is "fifty-two million, five hundred nine thousand, nine hundred eighty-nine".