51790280 has 16 divisors (see below), whose sum is σ = 116528220. Its totient is φ = 20716096.

The previous prime is 51790261. The next prime is 51790283. The reversal of 51790280 is 8209715.

It can be written as a sum of positive squares in 2 ways, for example, as 50495236 + 1295044 = 7106^2 + 1138^2 .

It is not an unprimeable number, because it can be changed into a prime (51790283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647339 + ... + 647418.

Almost surely, 2^51790280 is an apocalyptic number.

It is an amenable number.

51790280 is an abundant number, since it is smaller than the sum of its proper divisors (64737940).

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

51790280 is a wasteful number, since it uses less digits than its factorization.

51790280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1294768 (or 1294764 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 51790280 is about 7196.5463939309. The cubic root of 51790280 is about 372.7486561020.

Adding to 51790280 its reverse (8209715), we get a palindrome (59999995).

The spelling of 51790280 in words is "fifty-one million, seven hundred ninety thousand, two hundred eighty".