53855818 has 4 divisors (see below), whose sum is σ = 80783730. Its totient is φ = 26927908.

The previous prime is 53855807. The next prime is 53855819. The reversal of 53855818 is 81855835.

53855818 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 can be written as a sum of positive squares in only one way, i.e., 52809289 + 1046529 = 7267^2 + 1023^2 .

It is not an unprimeable number, because it can be changed into a prime (53855819) 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 as a sum of consecutive naturals, namely, 13463953 + ... + 13463956.

Almost surely, 2^53855818 is an apocalyptic number.

53855818 is a deficient number, since it is larger than the sum of its proper divisors (26927912).

53855818 is a wasteful number, since it uses less digits than its factorization.

53855818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26927911.

The product of its digits is 192000, while the sum is 43.

The square root of 53855818 is about 7338.6523285955. The cubic root of 53855818 is about 377.6396115335.

The spelling of 53855818 in words is "fifty-three million, eight hundred fifty-five thousand, eight hundred eighteen".