5221620 has 36 divisors (see below), whose sum is σ = 15839460. Its totient is φ = 1392384.

The previous prime is 5221603. The next prime is 5221631. The reversal of 5221620 is 261225.

It can be written as a sum of positive squares in 2 ways, for example, as 1205604 + 4016016 = 1098^2 + 2004^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 14.

It is a zygodrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 5221593 and 5221602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14325 + ... + 14684.

It is an arithmetic number, because the mean of its divisors is an integer number (439985).

Almost surely, 2^5221620 is an apocalyptic number.

It is an amenable number.

5221620 is an abundant number, since it is smaller than the sum of its proper divisors (10617840).

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

5221620 is a wasteful number, since it uses less digits than its factorization.

5221620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29024 (or 29019 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 5221620 is about 2285.0864316257. The cubic root of 5221620 is about 173.4875927865.

Adding to 5221620 its reverse (261225), we get a palindrome (5482845).

The spelling of 5221620 in words is "five million, two hundred twenty-one thousand, six hundred twenty".