51212104 has 16 divisors (see below), whose sum is σ = 96192000. Its totient is φ = 25560912.

The previous prime is 51212101. The next prime is 51212131. The reversal of 51212104 is 40121215.

51212104 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-2 number, since 2×51212104² = 5245359192213632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51212101) 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, 552 + ... + 10135.

It is an arithmetic number, because the mean of its divisors is an integer number (6012000).

Almost surely, 2^51212104 is an apocalyptic number.

It is an amenable number.

51212104 is a deficient number, since it is larger than the sum of its proper divisors (44979896).

51212104 is a wasteful number, since it uses less digits than its factorization.

51212104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11292 (or 11288 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 51212104 is about 7156.2632707301. The cubic root of 51212104 is about 371.3563657331.

Adding to 51212104 its reverse (40121215), we get a palindrome (91333319).

It can be divided in two parts, 5121 and 2104, that added together give a square (7225 = 85²).

The spelling of 51212104 in words is "fifty-one million, two hundred twelve thousand, one hundred four".