1154222 has 4 divisors (see below), whose sum is σ = 1731336. Its totient is φ = 577110.

The previous prime is 1154221. The next prime is 1154227. The reversal of 1154222 is 2224511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2224511 = 131 ⋅16981.

It is a self number, because there is not a number n which added to its sum of digits gives 1154222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1154221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 288554 + ... + 288557.

It is an arithmetic number, because the mean of its divisors is an integer number (432834).

2^1154222 is an apocalyptic number.

1154222 is a deficient number, since it is larger than the sum of its proper divisors (577114).

1154222 is an equidigital number, since it uses as much as digits as its factorization.

1154222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577113.

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

The square root of 1154222 is about 1074.3472436787. The cubic root of 1154222 is about 104.8970116406.

Adding to 1154222 its reverse (2224511), we get a palindrome (3378733).

The spelling of 1154222 in words is "one million, one hundred fifty-four thousand, two hundred twenty-two".