51954801803 has 4 divisors (see below), whose sum is σ = 51955286760. Its totient is φ = 51954316848.

The previous prime is 51954801797. The next prime is 51954801817. The reversal of 51954801803 is 30810845915.

It is a semiprime because it is the product of two primes, 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 51954801803 - 2²⁴ = 51938024587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51954800803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2825 + ... + 322362.

It is an arithmetic number, because the mean of its divisors is an integer number (12988821690).

Almost surely, 2^51954801803 is an apocalyptic number.

51954801803 is a deficient number, since it is larger than the sum of its proper divisors (484957).

51954801803 is a wasteful number, since it uses less digits than its factorization.

51954801803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484956.

The product of its (nonzero) digits is 172800, while the sum is 44.

The spelling of 51954801803 in words is "fifty-one billion, nine hundred fifty-four million, eight hundred one thousand, eight hundred three".