51321100235 has 4 divisors (see below), whose sum is σ = 61585320288. Its totient is φ = 41056880184.

The previous prime is 51321100189. The next prime is 51321100319. The reversal of 51321100235 is 53200112315.

It is a happy number.

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 51321100235 - 2¹⁴ = 51321083851 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51321100235.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5132110019 + ... + 5132110028.

It is an arithmetic number, because the mean of its divisors is an integer number (15396330072).

Almost surely, 2^51321100235 is an apocalyptic number.

51321100235 is a deficient number, since it is larger than the sum of its proper divisors (10264220053).

51321100235 is a wasteful number, since it uses less digits than its factorization.

51321100235 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10264220052.

The product of its (nonzero) digits is 900, while the sum is 23.

The spelling of 51321100235 in words is "fifty-one billion, three hundred twenty-one million, one hundred thousand, two hundred thirty-five".