51155520022 has 8 divisors (see below), whose sum is σ = 77814030672. Its totient is φ = 25217509800.

The previous prime is 51155519981. The next prime is 51155520037. The reversal of 51155520022 is 22002555115.

51155520022 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

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, 180124929 + ... + 180125212.

It is an arithmetic number, because the mean of its divisors is an integer number (9726753834).

Almost surely, 2^51155520022 is an apocalyptic number.

51155520022 is a deficient number, since it is larger than the sum of its proper divisors (26658510650).

51155520022 is a wasteful number, since it uses less digits than its factorization.

51155520022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360250214.

The product of its (nonzero) digits is 5000, while the sum is 28.

The spelling of 51155520022 in words is "fifty-one billion, one hundred fifty-five million, five hundred twenty thousand, twenty-two".