51215224060 has 96 divisors (see below), whose sum is σ = 144405499392. Its totient is φ = 14735243520.

The previous prime is 51215224051. The next prime is 51215224103. The reversal of 51215224060 is 6042251215.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1259082 + ... + 1299121.

It is an arithmetic number, because the mean of its divisors is an integer number (1504223952).

Almost surely, 2^51215224060 is an apocalyptic number.

It is an amenable number.

51215224060 is an abundant number, since it is smaller than the sum of its proper divisors (93190275332).

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

51215224060 is a wasteful number, since it uses less digits than its factorization.

51215224060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558243 (or 2558241 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 51215224060 its reverse (6042251215), we get a palindrome (57257475275).

The spelling of 51215224060 in words is "fifty-one billion, two hundred fifteen million, two hundred twenty-four thousand, sixty".