51249484 has 24 divisors (see below), whose sum is σ = 105367248. Its totient is φ = 21503040.

The previous prime is 51249391. The next prime is 51249503. The reversal of 51249484 is 48494215.

It is a super-2 number, since 2×51249484² = 5253019220532512, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44227 + ... + 45370.

It is an arithmetic number, because the mean of its divisors is an integer number (4390302).

Almost surely, 2^51249484 is an apocalyptic number.

It is an amenable number.

51249484 is an abundant number, since it is smaller than the sum of its proper divisors (54117764).

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

51249484 is a wasteful number, since it uses less digits than its factorization.

51249484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89625 (or 89623 counting only the distinct ones).

The product of its digits is 46080, while the sum is 37.

The square root of 51249484 is about 7158.8744925442. The cubic root of 51249484 is about 371.4466954526.

It can be divided in two parts, 512494 and 84, that added together give a triangular number (512578 = T₁₀₁₂).

The spelling of 51249484 in words is "fifty-one million, two hundred forty-nine thousand, four hundred eighty-four".