51208630 has 32 divisors (see below), whose sum is σ = 101253888. Its totient is φ = 18492000.

The previous prime is 51208627. The next prime is 51208639. The reversal of 51208630 is 3680215.

It is a happy number.

51208630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51208595 and 51208604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51208639) 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 15 ways as a sum of consecutive naturals, for example, 15069 + ... + 18151.

It is an arithmetic number, because the mean of its divisors is an integer number (3164184).

Almost surely, 2^51208630 is an apocalyptic number.

51208630 is a deficient number, since it is larger than the sum of its proper divisors (50045258).

51208630 is a wasteful number, since it uses less digits than its factorization.

51208630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3252.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 51208630 is about 7156.0205421729. The cubic root of 51208630 is about 371.3479684918.

Adding to 51208630 its reverse (3680215), we get a palindrome (54888845).

The spelling of 51208630 in words is "fifty-one million, two hundred eight thousand, six hundred thirty".