51113049227 has 4 divisors (see below), whose sum is σ = 51136508520. Its totient is φ = 51089589936.

The previous prime is 51113049199. The next prime is 51113049233. The reversal of 51113049227 is 72294031115.

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 51113049227 - 2¹² = 51113045131 is a prime.

It is a super-2 number, since 2×51113049227² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51113049727) 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, 11726378 + ... + 11730735.

It is an arithmetic number, because the mean of its divisors is an integer number (12784127130).

Almost surely, 2^51113049227 is an apocalyptic number.

51113049227 is a deficient number, since it is larger than the sum of its proper divisors (23459293).

51113049227 is a wasteful number, since it uses less digits than its factorization.

51113049227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23459292.

The product of its (nonzero) digits is 15120, while the sum is 35.

The spelling of 51113049227 in words is "fifty-one billion, one hundred thirteen million, forty-nine thousand, two hundred twenty-seven".