51202030551 has 32 divisors (see below), whose sum is σ = 80622336000. Its totient is φ = 28887899040.

The previous prime is 51202030519. The next prime is 51202030591. The reversal of 51202030551 is 15503020215.

It is a happy number.

It is not a de Polignac number, because 51202030551 - 2⁵ = 51202030519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51202030591) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 233640 + ... + 396221.

It is an arithmetic number, because the mean of its divisors is an integer number (2519448000).

Almost surely, 2^51202030551 is an apocalyptic number.

51202030551 is a deficient number, since it is larger than the sum of its proper divisors (29420305449).

51202030551 is an equidigital number, since it uses as much as digits as its factorization.

51202030551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629964 (or 629950 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

Adding to 51202030551 its reverse (15503020215), we get a palindrome (66705050766).

The spelling of 51202030551 in words is "fifty-one billion, two hundred two million, thirty thousand, five hundred fifty-one".