522222140 has 48 divisors (see below), whose sum is σ = 1237632480. Its totient is φ = 183348480.

The previous prime is 522222089. The next prime is 522222191. The reversal of 522222140 is 41222225.

It is an interprime number because it is at equal distance from previous prime (522222089) and next prime (522222191).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34547 + ... + 47306.

It is an arithmetic number, because the mean of its divisors is an integer number (25784010).

Almost surely, 2^522222140 is an apocalyptic number.

It is an amenable number.

522222140 is an abundant number, since it is smaller than the sum of its proper divisors (715410340).

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

522222140 is a wasteful number, since it uses less digits than its factorization.

522222140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81902 (or 81900 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 522222140 is about 22852.1802023352. The cubic root of 522222140 is about 805.2889874568.

Adding to 522222140 its reverse (41222225), we get a palindrome (563444365).

The spelling of 522222140 in words is "five hundred twenty-two million, two hundred twenty-two thousand, one hundred forty".