53820931 has 4 divisors (see below), whose sum is σ = 53983864. Its totient is φ = 53658000.

The previous prime is 53820859. The next prime is 53820937. The reversal of 53820931 is 13902835.

It is a happy number.

53820931 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 53820931 - 2²³ = 45432323 is a prime.

It is a super-4 number, since 4×53820931⁴ (a number of 32 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53820893 and 53820902.

It is not an unprimeable number, because it can be changed into a prime (53820937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80970 + ... + 81631.

It is an arithmetic number, because the mean of its divisors is an integer number (13495966).

Almost surely, 2^53820931 is an apocalyptic number.

53820931 is a deficient number, since it is larger than the sum of its proper divisors (162933).

53820931 is a wasteful number, since it uses less digits than its factorization.

53820931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162932.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 53820931 is about 7336.2750084767. The cubic root of 53820931 is about 377.5580508069.

The spelling of 53820931 in words is "fifty-three million, eight hundred twenty thousand, nine hundred thirty-one".