51162864 has 20 divisors (see below), whose sum is σ = 132170856. Its totient is φ = 17054272.

The previous prime is 51162857. The next prime is 51162869. The reversal of 51162864 is 46826115.

51162864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×51162864³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51162869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 532899 + ... + 532994.

Almost surely, 2^51162864 is an apocalyptic number.

It is an amenable number.

51162864 is an abundant number, since it is smaller than the sum of its proper divisors (81007992).

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

51162864 is a wasteful number, since it uses less digits than its factorization.

51162864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065904 (or 1065898 counting only the distinct ones).

The product of its digits is 11520, while the sum is 33.

The square root of 51162864 is about 7152.8221004021. The cubic root of 51162864 is about 371.2373089110.

Adding to 51162864 its reverse (46826115), we get a palindrome (97988979).

The spelling of 51162864 in words is "fifty-one million, one hundred sixty-two thousand, eight hundred sixty-four".