22031155 has 8 divisors (see below), whose sum is σ = 27349200. Its totient is φ = 17017056.

The previous prime is 22031137. The next prime is 22031159. The reversal of 22031155 is 55113022.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22031155 - 2⁵ = 22031123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22031159) 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 in 7 ways as a sum of consecutive naturals, for example, 75825 + ... + 76114.

It is an arithmetic number, because the mean of its divisors is an integer number (3418650).

Almost surely, 2^22031155 is an apocalyptic number.

22031155 is a deficient number, since it is larger than the sum of its proper divisors (5318045).

22031155 is a wasteful number, since it uses less digits than its factorization.

22031155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151973.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 22031155 is about 4693.7357190196. The cubic root of 22031155 is about 280.3361396706.

Adding to 22031155 its reverse (55113022), we get a palindrome (77144177).

It can be divided in two parts, 220 and 31155, that added together give a triangular number (31375 = T₂₅₀).

The spelling of 22031155 in words is "twenty-two million, thirty-one thousand, one hundred fifty-five".