5217780 has 96 divisors (see below), whose sum is σ = 16128000. Its totient is φ = 1254528.

The previous prime is 5217763. The next prime is 5217781. The reversal of 5217780 is 877125.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5217781) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26121 + ... + 26319.

It is an arithmetic number, because the mean of its divisors is an integer number (168000).

Almost surely, 2^5217780 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5217780, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8064000).

5217780 is an abundant number, since it is smaller than the sum of its proper divisors (10910220).

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

5217780 is a wasteful number, since it uses less digits than its factorization.

5217780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 251 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 5217780 is about 2284.2460462919. The cubic root of 5217780 is about 173.4450545366.

The spelling of 5217780 in words is "five million, two hundred seventeen thousand, seven hundred eighty".