51100610550 has 96 divisors (see below), whose sum is σ = 138498456960. Its totient is φ = 12365798400.

The previous prime is 51100610453. The next prime is 51100610557. The reversal of 51100610550 is 5501600115.

It is a super-2 number, since 2×51100610550² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51100610550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51100610557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 901446 + ... + 956454.

It is an arithmetic number, because the mean of its divisors is an integer number (1442692260).

Almost surely, 2^51100610550 is an apocalyptic number.

51100610550 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 51100610550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69249228480).

51100610550 is an abundant number, since it is smaller than the sum of its proper divisors (87397846410).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51100610550 is a wasteful number, since it uses less digits than its factorization.

51100610550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55598 (or 55593 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 24.

The spelling of 51100610550 in words is "fifty-one billion, one hundred million, six hundred ten thousand, five hundred fifty".