51212760 has 32 divisors (see below), whose sum is σ = 153638640. Its totient is φ = 13656704.

The previous prime is 51212717. The next prime is 51212779. The reversal of 51212760 is 6721215.

51212760 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 51212760.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213267 + ... + 213506.

Almost surely, 2^51212760 is an apocalyptic number.

It is an amenable number.

51212760 is an abundant number, since it is smaller than the sum of its proper divisors (102425880).

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

51212760 is a wasteful number, since it uses less digits than its factorization.

51212760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426787 (or 426783 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 51212760 is about 7156.3091045594. The cubic root of 51212760 is about 371.3579513526.

Adding to 51212760 its reverse (6721215), we get a palindrome (57933975).

The spelling of 51212760 in words is "fifty-one million, two hundred twelve thousand, seven hundred sixty".