20226155 has 8 divisors (see below), whose sum is σ = 24326592. Its totient is φ = 16144128.

The previous prime is 20226119. The next prime is 20226163. The reversal of 20226155 is 55162202.

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 20226155 - 2⁶ = 20226091 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20226155.

It is an unprimeable number.

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, 2054 + ... + 6683.

It is an arithmetic number, because the mean of its divisors is an integer number (3040824).

Almost surely, 2^20226155 is an apocalyptic number.

20226155 is a deficient number, since it is larger than the sum of its proper divisors (4100437).

20226155 is an equidigital number, since it uses as much as digits as its factorization.

20226155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9205.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 20226155 is about 4497.3497751454. The cubic root of 20226155 is about 272.4610611252.

Adding to 20226155 its reverse (55162202), we get a palindrome (75388357).

The spelling of 20226155 in words is "twenty million, two hundred twenty-six thousand, one hundred fifty-five".