51162812 has 6 divisors (see below), whose sum is σ = 89534928. Its totient is φ = 25581404.

The previous prime is 51162779. The next prime is 51162821. The reversal of 51162812 is 21826115.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6395348 + ... + 6395355.

It is an arithmetic number, because the mean of its divisors is an integer number (14922488).

Almost surely, 2^51162812 is an apocalyptic number.

It is an amenable number.

51162812 is a deficient number, since it is larger than the sum of its proper divisors (38372116).

51162812 is a wasteful number, since it uses less digits than its factorization.

51162812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12790707 (or 12790705 counting only the distinct ones).

The product of its digits is 960, while the sum is 26.

The square root of 51162812 is about 7152.8184654722. The cubic root of 51162812 is about 371.2371831405.

Adding to 51162812 its reverse (21826115), we get a palindrome (72988927).

The spelling of 51162812 in words is "fifty-one million, one hundred sixty-two thousand, eight hundred twelve".