51103630 has 16 divisors (see below), whose sum is σ = 94230864. Its totient is φ = 19942720.

The previous prime is 51103621. The next prime is 51103709. The reversal of 51103630 is 3630115.

It is a super-2 number, since 2×51103630² = 5223161998353800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51103598 and 51103607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61912 + ... + 62731.

It is an arithmetic number, because the mean of its divisors is an integer number (5889429).

Almost surely, 2^51103630 is an apocalyptic number.

51103630 is a deficient number, since it is larger than the sum of its proper divisors (43127234).

51103630 is a wasteful number, since it uses less digits than its factorization.

51103630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124691.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 51103630 is about 7148.6802977892. The cubic root of 51103630 is about 371.0939864516.

Adding to 51103630 its reverse (3630115), we get a palindrome (54733745).

The spelling of 51103630 in words is "fifty-one million, one hundred three thousand, six hundred thirty".