51512 has 16 divisors (see below), whose sum is σ = 99360. Its totient is φ = 25024.

The previous prime is 51511. The next prime is 51517. The reversal of 51512 is 21515.

It is a super-2 number, since 2×51512² = 5306972288, which contains 22 as substring.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 308 + ... + 444.

It is an arithmetic number, because the mean of its divisors is an integer number (6210).

2⁵¹⁵¹² is an apocalyptic number.

It is an amenable number.

51512 is a deficient number, since it is larger than the sum of its proper divisors (47848).

51512 is a wasteful number, since it uses less digits than its factorization.

51512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190 (or 186 counting only the distinct ones).

The product of its digits is 50, while the sum is 14.

The square root of 51512 is about 226.9625519772. The cubic root of 51512 is about 37.2079837953.

The spelling of 51512 in words is "fifty-one thousand, five hundred twelve".