5261797820 has 48 divisors (see below), whose sum is σ = 11117046528. Its totient is φ = 2091947520.

The previous prime is 5261797819. The next prime is 5261797829. The reversal of 5261797820 is 287971625.

It is a happy number.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5261797829) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2885429 + ... + 2887251.

It is an arithmetic number, because the mean of its divisors is an integer number (231605136).

Almost surely, 2^5261797820 is an apocalyptic number.

It is an amenable number.

5261797820 is an abundant number, since it is smaller than the sum of its proper divisors (5855248708).

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

5261797820 is a wasteful number, since it uses less digits than its factorization.

5261797820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630 (or 2628 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 5261797820 is about 72538.2507371111. The cubic root of 5261797820 is about 1739.3142385079.

The spelling of 5261797820 in words is "five billion, two hundred sixty-one million, seven hundred ninety-seven thousand, eight hundred twenty".