52290839 has 4 divisors (see below), whose sum is σ = 52335024. Its totient is φ = 52246656.

The previous prime is 52290829. The next prime is 52290851. The reversal of 52290839 is 93809225.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52290839 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 (52290809) 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, 20267 + ... + 22700.

It is an arithmetic number, because the mean of its divisors is an integer number (13083756).

Almost surely, 2^52290839 is an apocalyptic number.

52290839 is a deficient number, since it is larger than the sum of its proper divisors (44185).

52290839 is a wasteful number, since it uses less digits than its factorization.

52290839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44184.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 52290839 is about 7231.2404883256. The cubic root of 52290839 is about 373.9456940224.

The spelling of 52290839 in words is "fifty-two million, two hundred ninety thousand, eight hundred thirty-nine".