52840709 has 8 divisors (see below), whose sum is σ = 57754368. Its totient is φ = 48127680.

The previous prime is 52840681. The next prime is 52840727. The reversal of 52840709 is 90704825.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-52840709 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 (52840769) 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, 49607 + ... + 50660.

It is an arithmetic number, because the mean of its divisors is an integer number (7219296).

Almost surely, 2^52840709 is an apocalyptic number.

It is an amenable number.

52840709 is a deficient number, since it is larger than the sum of its proper divisors (4913659).

52840709 is a wasteful number, since it uses less digits than its factorization.

52840709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100315.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 52840709 is about 7269.1615059785. The cubic root of 52840709 is about 375.2518817400.

The spelling of 52840709 in words is "fifty-two million, eight hundred forty thousand, seven hundred nine".