55204081901 has 4 divisors (see below), whose sum is σ = 55204642752. Its totient is φ = 55203521052.

The previous prime is 55204081897. The next prime is 55204081909. The reversal of 55204081901 is 10918040255.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55204081901 - 2² = 55204081897 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 (55204081909) 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, 89411 + ... + 344096.

It is an arithmetic number, because the mean of its divisors is an integer number (13801160688).

Almost surely, 2^55204081901 is an apocalyptic number.

It is an amenable number.

55204081901 is a deficient number, since it is larger than the sum of its proper divisors (560851).

55204081901 is a wasteful number, since it uses less digits than its factorization.

55204081901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 560850.

The product of its (nonzero) digits is 14400, while the sum is 35.

The spelling of 55204081901 in words is "fifty-five billion, two hundred four million, eighty-one thousand, nine hundred one".