51212080 has 20 divisors (see below), whose sum is σ = 119068272. Its totient is φ = 20484800.

The previous prime is 51212071. The next prime is 51212081. The reversal of 51212080 is 8021215.

51212080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (51212081) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 319996 + ... + 320155.

Almost surely, 2^51212080 is an apocalyptic number.

It is an amenable number.

51212080 is an abundant number, since it is smaller than the sum of its proper divisors (67856192).

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

51212080 is a wasteful number, since it uses less digits than its factorization.

51212080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640164 (or 640158 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 19.

The square root of 51212080 is about 7156.2615938771. The cubic root of 51212080 is about 371.3563077223.

Adding to 51212080 its reverse (8021215), we get a palindrome (59233295).

The spelling of 51212080 in words is "fifty-one million, two hundred twelve thousand, eighty".