51515142224 has 40 divisors (see below), whose sum is σ = 122843804160. Its totient is φ = 20379616128.

The previous prime is 51515142197. The next prime is 51515142229. The reversal of 51515142224 is 42224151515.

51515142224 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51515142229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17689184 + ... + 17692095.

It is an arithmetic number, because the mean of its divisors is an integer number (3071095104).

Almost surely, 2^51515142224 is an apocalyptic number.

It is an amenable number.

51515142224 is an abundant number, since it is smaller than the sum of its proper divisors (71328661936).

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

51515142224 is a wasteful number, since it uses less digits than its factorization.

51515142224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35381307 (or 35381301 counting only the distinct ones).

The product of its digits is 16000, while the sum is 32.

Adding to 51515142224 its reverse (42224151515), we get a palindrome (93739293739).

The spelling of 51515142224 in words is "fifty-one billion, five hundred fifteen million, one hundred forty-two thousand, two hundred twenty-four".