52212270 has 128 divisors (see below), whose sum is σ = 148925952. Its totient is φ = 11571200.

The previous prime is 52212269. The next prime is 52212283. The reversal of 52212270 is 7221225.

It is a happy number.

52212270 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×52212270² = 5452242277105800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 229897 + ... + 230123.

It is an arithmetic number, because the mean of its divisors is an integer number (1163484).

Almost surely, 2^52212270 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52212270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74462976).

52212270 is an abundant number, since it is smaller than the sum of its proper divisors (96713682).

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

52212270 is a wasteful number, since it uses less digits than its factorization.

52212270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 52212270 is about 7225.8058374136. The cubic root of 52212270 is about 373.7583108706.

Adding to 52212270 its reverse (7221225), we get a palindrome (59433495).

The spelling of 52212270 in words is "fifty-two million, two hundred twelve thousand, two hundred seventy".