51220000235 has 8 divisors (see below), whose sum is σ = 62471607216. Its totient is φ = 40304262240.

The previous prime is 51220000229. The next prime is 51220000283. The reversal of 51220000235 is 53200002215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51220000235 - 2⁴ = 51220000219 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83966909 + ... + 83967518.

It is an arithmetic number, because the mean of its divisors is an integer number (7808950902).

Almost surely, 2^51220000235 is an apocalyptic number.

51220000235 is a deficient number, since it is larger than the sum of its proper divisors (11251606981).

51220000235 is a wasteful number, since it uses less digits than its factorization.

51220000235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167934493.

The product of its (nonzero) digits is 600, while the sum is 20.

The spelling of 51220000235 in words is "fifty-one billion, two hundred twenty million, two hundred thirty-five", and thus it is an aban number.