53855819 has 2 divisors, whose sum is σ = 53855820. Its totient is φ = 53855818.

The previous prime is 53855807. The next prime is 53855833. The reversal of 53855819 is 91855835.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53855819 - 2⁸ = 53855563 is a prime.

It is a super-2 number, since 2×53855819² = 5800898480321522, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53855819.

It is not a weakly prime, because it can be changed into another prime (53455819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26927909 + 26927910.

It is an arithmetic number, because the mean of its divisors is an integer number (26927910).

Almost surely, 2^53855819 is an apocalyptic number.

53855819 is a deficient number, since it is larger than the sum of its proper divisors (1).

53855819 is an equidigital number, since it uses as much as digits as its factorization.

53855819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 216000, while the sum is 44.

The square root of 53855819 is about 7338.6523967279. The cubic root of 53855819 is about 377.6396138709.

The spelling of 53855819 in words is "fifty-three million, eight hundred fifty-five thousand, eight hundred nineteen".