53818913 has 4 divisors (see below), whose sum is σ = 53891328. Its totient is φ = 53746500.

The previous prime is 53818909. The next prime is 53818931. The reversal of 53818913 is 31981835.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53818913 - 2² = 53818909 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53818813) 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, 35081 + ... + 36582.

It is an arithmetic number, because the mean of its divisors is an integer number (13472832).

Almost surely, 2^53818913 is an apocalyptic number.

It is an amenable number.

53818913 is a deficient number, since it is larger than the sum of its proper divisors (72415).

53818913 is an equidigital number, since it uses as much as digits as its factorization.

53818913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72414.

The product of its digits is 25920, while the sum is 38.

The square root of 53818913 is about 7336.1374714491. The cubic root of 53818913 is about 377.5533319385.

The spelling of 53818913 in words is "fifty-three million, eight hundred eighteen thousand, nine hundred thirteen".