52220000 has 120 divisors (see below), whose sum is σ = 147215376. Its totient is φ = 17856000.

The previous prime is 52219997. The next prime is 52220011. The reversal of 52220000 is 2225.

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 139814 + ... + 140186.

Almost surely, 2^52220000 is an apocalyptic number.

52220000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52220000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73607688).

52220000 is an abundant number, since it is smaller than the sum of its proper divisors (94995376).

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

52220000 is an equidigital number, since it uses as much as digits as its factorization.

52220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 387 counting only the distinct ones).

The product of its (nonzero) digits is 40, while the sum is 11.

The square root of 52220000 is about 7226.3407060559. The cubic root of 52220000 is about 373.7767548697.

Adding to 52220000 its reverse (2225), we get a palindrome (52222225).

The spelling of 52220000 in words is "fifty-two million, two hundred twenty thousand".