51552252242 has 16 divisors (see below), whose sum is σ = 82521815040. Its totient is φ = 24068858688.

The previous prime is 51552252217. The next prime is 51552252253. The reversal of 51552252242 is 24225225515.

It is a super-2 number, since 2×51552252242² (a number of 22 digits) contains 22 as substring.

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, 5965142 + ... + 5973777.

It is an arithmetic number, because the mean of its divisors is an integer number (5157613440).

Almost surely, 2^51552252242 is an apocalyptic number.

51552252242 is a deficient number, since it is larger than the sum of its proper divisors (30969562798).

51552252242 is a wasteful number, since it uses less digits than its factorization.

51552252242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11939065.

The product of its digits is 80000, while the sum is 35.

Adding to 51552252242 its reverse (24225225515), we get a palindrome (75777477757).

The spelling of 51552252242 in words is "fifty-one billion, five hundred fifty-two million, two hundred fifty-two thousand, two hundred forty-two".