53020839 has 4 divisors (see below), whose sum is σ = 70694456. Its totient is φ = 35347224.

The previous prime is 53020823. The next prime is 53020853. The reversal of 53020839 is 93802035.

It is a happy number.

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

It is not a de Polignac number, because 53020839 - 2⁴ = 53020823 is a prime.

It is a super-2 number, since 2×53020839² = 5622418736527842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53020039) 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 3 ways as a sum of consecutive naturals, for example, 8836804 + ... + 8836809.

It is an arithmetic number, because the mean of its divisors is an integer number (17673614).

Almost surely, 2^53020839 is an apocalyptic number.

53020839 is a deficient number, since it is larger than the sum of its proper divisors (17673617).

53020839 is a wasteful number, since it uses less digits than its factorization.

53020839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17673616.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 53020839 is about 7281.5409770185. The cubic root of 53020839 is about 375.6777999390.

The spelling of 53020839 in words is "fifty-three million, twenty thousand, eight hundred thirty-nine".