51122424247 has 4 divisors (see below), whose sum is σ = 51326099496. Its totient is φ = 50918749000.

The previous prime is 51122424193. The next prime is 51122424299. The reversal of 51122424247 is 74242422115.

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 51122424247 - 2¹¹ = 51122422199 is a prime.

It is a super-2 number, since 2×51122424247² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51122424547) 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, 101837248 + ... + 101837749.

It is an arithmetic number, because the mean of its divisors is an integer number (12831524874).

Almost surely, 2^51122424247 is an apocalyptic number.

51122424247 is a deficient number, since it is larger than the sum of its proper divisors (203675249).

51122424247 is a wasteful number, since it uses less digits than its factorization.

51122424247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203675248.

The product of its digits is 35840, while the sum is 34.

The spelling of 51122424247 in words is "fifty-one billion, one hundred twenty-two million, four hundred twenty-four thousand, two hundred forty-seven".