51350332553 has 4 divisors (see below), whose sum is σ = 55300358148. Its totient is φ = 47400306960.

The previous prime is 51350332543. The next prime is 51350332559. The reversal of 51350332553 is 35523305315.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28475887504 + 22874445049 = 168748^2 + 151243^2 .

It is a cyclic number.

It is not a de Polignac number, because 51350332553 - 2³² = 47055365257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51350332559) 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, 1975012778 + ... + 1975012803.

It is an arithmetic number, because the mean of its divisors is an integer number (13825089537).

Almost surely, 2^51350332553 is an apocalyptic number.

It is an amenable number.

51350332553 is a deficient number, since it is larger than the sum of its proper divisors (3950025595).

51350332553 is a wasteful number, since it uses less digits than its factorization.

51350332553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3950025594.

The product of its (nonzero) digits is 101250, while the sum is 35.

Adding to 51350332553 its reverse (35523305315), we get a palindrome (86873637868).

The spelling of 51350332553 in words is "fifty-one billion, three hundred fifty million, three hundred thirty-two thousand, five hundred fifty-three".