51512484 has 12 divisors (see below), whose sum is σ = 120195824. Its totient is φ = 17170824.

The previous prime is 51512459. The next prime is 51512491. The reversal of 51512484 is 48421515.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2146342 + ... + 2146365.

Almost surely, 2^51512484 is an apocalyptic number.

It is an amenable number.

51512484 is an abundant number, since it is smaller than the sum of its proper divisors (68683340).

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

51512484 is a wasteful number, since it uses less digits than its factorization.

51512484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292714 (or 4292712 counting only the distinct ones).

The product of its digits is 6400, while the sum is 30.

The square root of 51512484 is about 7177.2197959934. The cubic root of 51512484 is about 372.0810032875.

Adding to 51512484 its reverse (48421515), we get a palindrome (99933999).

The spelling of 51512484 in words is "fifty-one million, five hundred twelve thousand, four hundred eighty-four".