51630282 has 48 divisors (see below), whose sum is σ = 123226272. Its totient is φ = 15492960.

The previous prime is 51630269. The next prime is 51630301. The reversal of 51630282 is 28203615.

51630282 is a `hidden beast` number, since 5 + 1 + 630 + 28 + 2 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19968 + ... + 22404.

It is an arithmetic number, because the mean of its divisors is an integer number (2567214).

Almost surely, 2^51630282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51630282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61613136).

51630282 is an abundant number, since it is smaller than the sum of its proper divisors (71595990).

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

51630282 is a wasteful number, since it uses less digits than its factorization.

51630282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2563 (or 2560 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 51630282 is about 7185.4214907687. The cubic root of 51630282 is about 372.3644105108.

Adding to 51630282 its reverse (28203615), we get a palindrome (79833897).

The spelling of 51630282 in words is "fifty-one million, six hundred thirty thousand, two hundred eighty-two".