51051312 has 60 divisors (see below), whose sum is σ = 153868624. Its totient is φ = 15707520.

The previous prime is 51051311. The next prime is 51051317. The reversal of 51051312 is 21315015.

51051312 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 (18).

It is not an unprimeable number, because it can be changed into a prime (51051311) 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 11 ways as a sum of consecutive naturals, for example, 11764 + ... + 15507.

Almost surely, 2^51051312 is an apocalyptic number.

51051312 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51051312 is an abundant number, since it is smaller than the sum of its proper divisors (102817312).

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

51051312 is a wasteful number, since it uses less digits than its factorization.

51051312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27298 (or 27289 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 51051312 is about 7145.0200839466. The cubic root of 51051312 is about 370.9673057939.

Adding to 51051312 its reverse (21315015), we get a palindrome (72366327).

The spelling of 51051312 in words is "fifty-one million, fifty-one thousand, three hundred twelve".