1145222 has 16 divisors (see below), whose sum is σ = 1959552. Its totient is φ = 497280.

The previous prime is 1145213. The next prime is 1145227. The reversal of 1145222 is 2225411.

1145222 is nontrivially palindromic in base 5.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a self number, because there is not a number n which added to its sum of digits gives 1145222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145227) 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, 854 + ... + 1737.

It is an arithmetic number, because the mean of its divisors is an integer number (122472).

2^1145222 is an apocalyptic number.

1145222 is a deficient number, since it is larger than the sum of its proper divisors (814330).

1145222 is a wasteful number, since it uses less digits than its factorization.

1145222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2623.

The product of its digits is 160, while the sum is 17.

The square root of 1145222 is about 1070.1504567116. The cubic root of 1145222 is about 104.6236564915.

The spelling of 1145222 in words is "one million, one hundred forty-five thousand, two hundred twenty-two".