55853381953 has 4 divisors (see below), whose sum is σ = 58281789888. Its totient is φ = 53424974020.

The previous prime is 55853381929. The next prime is 55853381957. The reversal of 55853381953 is 35918335855.

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 a de Polignac number, because none of the positive numbers 2^k-55853381953 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55853381894 and 55853381903.

It is not an unprimeable number, because it can be changed into a prime (55853381957) 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, 1214203933 + ... + 1214203978.

It is an arithmetic number, because the mean of its divisors is an integer number (14570447472).

Almost surely, 2^55853381953 is an apocalyptic number.

It is an amenable number.

55853381953 is a deficient number, since it is larger than the sum of its proper divisors (2428407935).

55853381953 is a wasteful number, since it uses less digits than its factorization.

55853381953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2428407934.

The product of its digits is 9720000, while the sum is 55.

The spelling of 55853381953 in words is "fifty-five billion, eight hundred fifty-three million, three hundred eighty-one thousand, nine hundred fifty-three".