52086509 has 4 divisors (see below), whose sum is σ = 52137120. Its totient is φ = 52035900.

The previous prime is 52086499. The next prime is 52086511. The reversal of 52086509 is 90568025.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 52086509 - 2⁴ = 52086493 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 (52086539) 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, 23729 + ... + 25830.

It is an arithmetic number, because the mean of its divisors is an integer number (13034280).

Almost surely, 2^52086509 is an apocalyptic number.

It is an amenable number.

52086509 is a deficient number, since it is larger than the sum of its proper divisors (50611).

52086509 is a wasteful number, since it uses less digits than its factorization.

52086509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50610.

The product of its (nonzero) digits is 21600, while the sum is 35.

The square root of 52086509 is about 7217.0983781572. The cubic root of 52086509 is about 373.4579854976.

The spelling of 52086509 in words is "fifty-two million, eighty-six thousand, five hundred nine".