51126280 has 32 divisors (see below), whose sum is σ = 116616600. Its totient is φ = 20169216.

The previous prime is 51126277. The next prime is 51126281. The reversal of 51126280 is 8262115.

It can be written as a sum of positive squares in 4 ways, for example, as 25583364 + 25542916 = 5058^2 + 5054^2 .

It is a super-2 number, since 2×51126280² = 5227793013276800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51126281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5835 + ... + 11674.

Almost surely, 2^51126280 is an apocalyptic number.

It is an amenable number.

51126280 is an abundant number, since it is smaller than the sum of its proper divisors (65490320).

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

51126280 is a wasteful number, since it uses less digits than its factorization.

51126280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17593 (or 17589 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 51126280 is about 7150.2643307783. The cubic root of 51126280 is about 371.1488034141.

Adding to 51126280 its reverse (8262115), we get a palindrome (59388395).

The spelling of 51126280 in words is "fifty-one million, one hundred twenty-six thousand, two hundred eighty".