20244151 has 4 divisors (see below), whose sum is σ = 20253352. Its totient is φ = 20234952.

The previous prime is 20244149. The next prime is 20244157. The reversal of 20244151 is 15144202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 20244151 - 2¹ = 20244149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20244157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 865 + ... + 6421.

It is an arithmetic number, because the mean of its divisors is an integer number (5063338).

Almost surely, 2^20244151 is an apocalyptic number.

20244151 is a deficient number, since it is larger than the sum of its proper divisors (9201).

20244151 is an equidigital number, since it uses as much as digits as its factorization.

20244151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9200.

The product of its (nonzero) digits is 320, while the sum is 19.

The square root of 20244151 is about 4499.3500641759. The cubic root of 20244151 is about 272.5418435870.

Adding to 20244151 its reverse (15144202), we get a palindrome (35388353).

The spelling of 20244151 in words is "twenty million, two hundred forty-four thousand, one hundred fifty-one".