52003620 has 120 divisors (see below), whose sum is σ = 166852224. Its totient is φ = 13552704.

The previous prime is 52003619. The next prime is 52003631. The reversal of 52003620 is 2630025.

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 = 52003593 and 52003602.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 75799 + ... + 76481.

Almost surely, 2^52003620 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 52003620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83426112).

52003620 is an abundant number, since it is smaller than the sum of its proper divisors (114848604).

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

52003620 is a wasteful number, since it uses less digits than its factorization.

52003620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751 (or 740 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 52003620 is about 7211.3535483985. The cubic root of 52003620 is about 373.2597768207.

Adding to 52003620 its reverse (2630025), we get a palindrome (54633645).

The spelling of 52003620 in words is "fifty-two million, three thousand, six hundred twenty".