51456222460 has 24 divisors (see below), whose sum is σ = 108064550160. Its totient is φ = 20581254144.

The previous prime is 51456222457. The next prime is 51456222479. The reversal of 51456222460 is 6422265415.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312507 + ... + 447853.

It is an arithmetic number, because the mean of its divisors is an integer number (4502689590).

Almost surely, 2^51456222460 is an apocalyptic number.

It is an amenable number.

51456222460 is an abundant number, since it is smaller than the sum of its proper divisors (56608327700).

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

51456222460 is a wasteful number, since it uses less digits than its factorization.

51456222460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154365 (or 154363 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 37.

Adding to 51456222460 its reverse (6422265415), we get a palindrome (57878487875).

The spelling of 51456222460 in words is "fifty-one billion, four hundred fifty-six million, two hundred twenty-two thousand, four hundred sixty".