52201620 has 72 divisors (see below), whose sum is σ = 160392960. Its totient is φ = 13740480.

The previous prime is 52201619. The next prime is 52201621. The reversal of 52201620 is 2610225.

It is an interprime number because it is at equal distance from previous prime (52201619) and next prime (52201621).

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

It is a junction number, because it is equal to n+sod(n) for n = 52201593 and 52201602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52201621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12385 + ... + 16055.

It is an arithmetic number, because the mean of its divisors is an integer number (2227680).

Almost surely, 2^52201620 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 52201620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80196480).

52201620 is an abundant number, since it is smaller than the sum of its proper divisors (108191340).

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

52201620 is a wasteful number, since it uses less digits than its factorization.

52201620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3765 (or 3760 counting only the distinct ones).

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

The square root of 52201620 is about 7225.0688578034. The cubic root of 52201620 is about 373.7328966868.

Adding to 52201620 its reverse (2610225), we get a palindrome (54811845).

The spelling of 52201620 in words is "fifty-two million, two hundred one thousand, six hundred twenty".