43251222 has 48 divisors (see below), whose sum is σ = 101483712. Its totient is φ = 12252240.

The previous prime is 43251193. The next prime is 43251227. The reversal of 43251222 is 22215234.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43251227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37953 + ... + 39075.

It is an arithmetic number, because the mean of its divisors is an integer number (2114244).

Almost surely, 2^43251222 is an apocalyptic number.

43251222 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 43251222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50741856).

43251222 is an abundant number, since it is smaller than the sum of its proper divisors (58232490).

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

43251222 is a wasteful number, since it uses less digits than its factorization.

43251222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273 (or 1266 counting only the distinct ones).

The product of its digits is 960, while the sum is 21.

The square root of 43251222 is about 6576.5661252663. The cubic root of 43251222 is about 351.0207534746.

Adding to 43251222 its reverse (22215234), we get a palindrome (65466456).

The spelling of 43251222 in words is "forty-three million, two hundred fifty-one thousand, two hundred twenty-two".