51207630 has 32 divisors (see below), whose sum is σ = 126222624. Its totient is φ = 13286016.

The previous prime is 51207623. The next prime is 51207643. The reversal of 51207630 is 3670215.

It is a self number, because there is not a number n which added to its sum of digits gives 51207630.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21957 + ... + 24176.

It is an arithmetic number, because the mean of its divisors is an integer number (3944457).

Almost surely, 2^51207630 is an apocalyptic number.

51207630 is an abundant number, since it is smaller than the sum of its proper divisors (75014994).

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

51207630 is a wasteful number, since it uses less digits than its factorization.

51207630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46180.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 51207630 is about 7155.9506705958. The cubic root of 51207630 is about 371.3455512535.

Adding to 51207630 its reverse (3670215), we get a palindrome (54877845).

The spelling of 51207630 in words is "fifty-one million, two hundred seven thousand, six hundred thirty".