52009389 has 6 divisors (see below), whose sum is σ = 75124686. Its totient is φ = 34672920.

The previous prime is 52009387. The next prime is 52009411. The reversal of 52009389 is 98390025.

It can be written as a sum of positive squares in only one way, i.e., 40106889 + 11902500 = 6333^2 + 3450^2 .

It is not a de Polignac number, because 52009389 - 2¹ = 52009387 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52009381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2889402 + ... + 2889419.

It is an arithmetic number, because the mean of its divisors is an integer number (12520781).

Almost surely, 2^52009389 is an apocalyptic number.

It is an amenable number.

52009389 is a deficient number, since it is larger than the sum of its proper divisors (23115297).

52009389 is a wasteful number, since it uses less digits than its factorization.

52009389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5778827 (or 5778824 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 52009389 is about 7211.7535315622. The cubic root of 52009389 is about 373.2735787832.

The spelling of 52009389 in words is "fifty-two million, nine thousand, three hundred eighty-nine".