51243200303 has 4 divisors (see below), whose sum is σ = 53010207240. Its totient is φ = 49476193368.

The previous prime is 51243200293. The next prime is 51243200341. The reversal of 51243200303 is 30300234215.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51243200303 - 2⁴ = 51243200287 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 (51243206303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 883503425 + ... + 883503482.

It is an arithmetic number, because the mean of its divisors is an integer number (13252551810).

Almost surely, 2^51243200303 is an apocalyptic number.

51243200303 is a deficient number, since it is larger than the sum of its proper divisors (1767006937).

51243200303 is a wasteful number, since it uses less digits than its factorization.

51243200303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767006936.

The product of its (nonzero) digits is 2160, while the sum is 23.

Adding to 51243200303 its reverse (30300234215), we get a palindrome (81543434518).

The spelling of 51243200303 in words is "fifty-one billion, two hundred forty-three million, two hundred thousand, three hundred three".