51552042211 has 4 divisors (see below), whose sum is σ = 51819151432. Its totient is φ = 51284932992.

The previous prime is 51552042187. The next prime is 51552042221. The reversal of 51552042211 is 11224025515.

51552042211 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 51552042211 - 2⁷ = 51552042083 is a prime.

It is a super-2 number, since 2×51552042211² (a number of 22 digits) contains 22 as substring.

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 51552042211.

It is not an unprimeable number, because it can be changed into a prime (51552042221) 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, 133554321 + ... + 133554706.

It is an arithmetic number, because the mean of its divisors is an integer number (12954787858).

Almost surely, 2^51552042211 is an apocalyptic number.

51552042211 is a deficient number, since it is larger than the sum of its proper divisors (267109221).

51552042211 is a wasteful number, since it uses less digits than its factorization.

51552042211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267109220.

The product of its (nonzero) digits is 4000, while the sum is 28.

Adding to 51552042211 its reverse (11224025515), we get a palindrome (62776067726).

The spelling of 51552042211 in words is "fifty-one billion, five hundred fifty-two million, forty-two thousand, two hundred eleven".