51108280 has 32 divisors (see below), whose sum is σ = 115428240. Its totient is φ = 20366080.

The previous prime is 51108269. The next prime is 51108287. The reversal of 51108280 is 8280115.

It is a super-2 number, since 2×51108280² = 5224112569116800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51108287) 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, 8967 + ... + 13513.

Almost surely, 2^51108280 is an apocalyptic number.

It is an amenable number.

51108280 is an abundant number, since it is smaller than the sum of its proper divisors (64319960).

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

51108280 is a wasteful number, since it uses less digits than its factorization.

51108280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4839 (or 4835 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 51108280 is about 7149.0055252462. The cubic root of 51108280 is about 371.1052415862.

Adding to 51108280 its reverse (8280115), we get a palindrome (59388395).

The spelling of 51108280 in words is "fifty-one million, one hundred eight thousand, two hundred eighty".