52022220 has 24 divisors (see below), whose sum is σ = 145662384. Its totient is φ = 13872576.

The previous prime is 52022213. The next prime is 52022221. The reversal of 52022220 is 2222025.

It is a super-2 number, since 2×52022220² = 5412622747456800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 52022220.

It is not an unprimeable number, because it can be changed into a prime (52022221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 433459 + ... + 433578.

It is an arithmetic number, because the mean of its divisors is an integer number (6069266).

Almost surely, 2^52022220 is an apocalyptic number.

It is an amenable number.

52022220 is an abundant number, since it is smaller than the sum of its proper divisors (93640164).

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

52022220 is a wasteful number, since it uses less digits than its factorization.

52022220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867049 (or 867047 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 52022220 is about 7212.6430661721. The cubic root of 52022220 is about 373.3042724686.

Adding to 52022220 its reverse (2222025), we get a palindrome (54244245).

The spelling of 52022220 in words is "fifty-two million, twenty-two thousand, two hundred twenty".