51020284 has 48 divisors (see below), whose sum is σ = 104843200. Its totient is φ = 21275136.

The previous prime is 51020273. The next prime is 51020297. The reversal of 51020284 is 48202015.

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, 222682 + ... + 222910.

Almost surely, 2^51020284 is an apocalyptic number.

It is an amenable number.

51020284 is an abundant number, since it is smaller than the sum of its proper divisors (53822916).

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

51020284 is a wasteful number, since it uses less digits than its factorization.

51020284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422 (or 420 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 51020284 is about 7142.8484514233. The cubic root of 51020284 is about 370.8921349783.

Adding to 51020284 its reverse (48202015), we get a palindrome (99222299).

The spelling of 51020284 in words is "fifty-one million, twenty thousand, two hundred eighty-four".