51040284552 has 192 divisors, whose sum is σ = 144730460160. Its totient is φ = 16231104000.

The previous prime is 51040284551. The next prime is 51040284557. The reversal of 51040284552 is 25548204015.

It is a super-2 number, since 2×51040284552² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (51040284551) 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, 84085833 + ... + 84086439.

It is an arithmetic number, because the mean of its divisors is an integer number (753804480).

Almost surely, 2^51040284552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51040284552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72365230080).

51040284552 is an abundant number, since it is smaller than the sum of its proper divisors (93690175608).

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

51040284552 is a wasteful number, since it uses less digits than its factorization.

51040284552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1124 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 36.

Adding to 51040284552 its reverse (25548204015), we get a palindrome (76588488567).

The spelling of 51040284552 in words is "fifty-one billion, forty million, two hundred eighty-four thousand, five hundred fifty-two".