53803813 has 6 divisors (see below), whose sum is σ = 62588166. Its totient is φ = 46117512.

The previous prime is 53803807. The next prime is 53803823. The reversal of 53803813 is 31830835.

It can be written as a sum of positive squares in only one way, i.e., 32069569 + 21734244 = 5663^2 + 4662^2 .

It is not a de Polignac number, because 53803813 - 2⁵ = 53803781 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 (53803823) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 548970 + ... + 549067.

It is an arithmetic number, because the mean of its divisors is an integer number (10431361).

Almost surely, 2^53803813 is an apocalyptic number.

It is an amenable number.

53803813 is a deficient number, since it is larger than the sum of its proper divisors (8784353).

53803813 is a wasteful number, since it uses less digits than its factorization.

53803813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098051 (or 1098044 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 53803813 is about 7335.1082473267. The cubic root of 53803813 is about 377.5180185251.

The spelling of 53803813 in words is "fifty-three million, eight hundred three thousand, eight hundred thirteen".