51212103 has 8 divisors (see below), whose sum is σ = 68735616. Its totient is φ = 33915000.

The previous prime is 51212101. The next prime is 51212131. The reversal of 51212103 is 30121215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51212103 - 2¹ = 51212101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51212101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56073 + ... + 56978.

It is an arithmetic number, because the mean of its divisors is an integer number (8591952).

Almost surely, 2^51212103 is an apocalyptic number.

51212103 is a deficient number, since it is larger than the sum of its proper divisors (17523513).

51212103 is a wasteful number, since it uses less digits than its factorization.

51212103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113205.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 51212103 is about 7156.2632008612. The cubic root of 51212103 is about 371.3563633160.

Adding to 51212103 its reverse (30121215), we get a palindrome (81333318).

It can be divided in two parts, 51212 and 103, that added together give a palindrome (51315).

The spelling of 51212103 in words is "fifty-one million, two hundred twelve thousand, one hundred three".