52840005 has 8 divisors (see below), whose sum is σ = 84544032. Its totient is φ = 28181328.

The previous prime is 52839989. The next prime is 52840009. The reversal of 52840005 is 50004825.

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

It is not a de Polignac number, because 52840005 - 2⁴ = 52839989 is a prime.

It is a super-2 number, since 2×52840005² = 5584132256800050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52840009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1761319 + ... + 1761348.

It is an arithmetic number, because the mean of its divisors is an integer number (10568004).

Almost surely, 2^52840005 is an apocalyptic number.

It is an amenable number.

52840005 is a deficient number, since it is larger than the sum of its proper divisors (31704027).

52840005 is a wasteful number, since it uses less digits than its factorization.

52840005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3522675.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 52840005 is about 7269.1130820754. The cubic root of 52840005 is about 375.2502152313.

The spelling of 52840005 in words is "fifty-two million, eight hundred forty thousand, five".