51006011005550 has 24 divisors (see below), whose sum is σ = 94872394685856. Its totient is φ = 20402143280640.

The previous prime is 51006011005529. The next prime is 51006011005559. The reversal of 51006011005550 is 5550011060015.

It is a happy number.

It is a super-2 number, since 2×51006011005550² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51006011005559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2558387 + ... + 10419086.

It is an arithmetic number, because the mean of its divisors is an integer number (3953016445244).

Almost surely, 2^{51006011005550} is an apocalyptic number.

51006011005550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51006011005550 is a deficient number, since it is larger than the sum of its proper divisors (43866383680306).

51006011005550 is a wasteful number, since it uses less digits than its factorization.

51006011005550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13056092 (or 13056087 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

Adding to 51006011005550 its reverse (5550011060015), we get a palindrome (56556022065565).

The spelling of 51006011005550 in words is "fifty-one trillion, six billion, eleven million, five thousand, five hundred fifty".