51000550101 has 24 divisors (see below), whose sum is σ = 80416729120. Its totient is φ = 32210870832.

The previous prime is 51000550091. The next prime is 51000550157. The reversal of 51000550101 is 10105500015.

51000550101 is a `hidden beast` number, since 5 + 10 + 0 + 0 + 550 + 101 = 666.

It is not a de Polignac number, because 51000550101 - 2¹⁰ = 51000549077 is a prime.

It is a super-2 number, since 2×51000550101² (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 (51000550801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5518510 + ... + 5527743.

Almost surely, 2^51000550101 is an apocalyptic number.

It is an amenable number.

51000550101 is a deficient number, since it is larger than the sum of its proper divisors (29416179019).

51000550101 is a wasteful number, since it uses less digits than its factorization.

51000550101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11046287 (or 11046275 counting only the distinct ones).

The product of its (nonzero) digits is 125, while the sum is 18.

The spelling of 51000550101 in words is "fifty-one billion, five hundred fifty thousand, one hundred one".