51461512 has 16 divisors (see below), whose sum is σ = 96998400. Its totient is φ = 25595280.

The previous prime is 51461477. The next prime is 51461513. The reversal of 51461512 is 21516415.

It is a happy number.

It is a super-2 number, since 2×51461512² = 5296574434652288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51461513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15312 + ... + 18367.

It is an arithmetic number, because the mean of its divisors is an integer number (6062400).

Almost surely, 2^51461512 is an apocalyptic number.

It is an amenable number.

51461512 is a deficient number, since it is larger than the sum of its proper divisors (45536888).

51461512 is a wasteful number, since it uses less digits than its factorization.

51461512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33876 (or 33872 counting only the distinct ones).

The product of its digits is 1200, while the sum is 25.

The square root of 51461512 is about 7173.6679599770. The cubic root of 51461512 is about 371.9582371122.

Adding to 51461512 its reverse (21516415), we get a palindrome (72977927).

It can be divided in two parts, 514 and 61512, that added together give a palindrome (62026).

The spelling of 51461512 in words is "fifty-one million, four hundred sixty-one thousand, five hundred twelve".