20144253 has 8 divisors (see below), whose sum is σ = 27483808. Its totient is φ = 13117104.

The previous prime is 20144249. The next prime is 20144261. The reversal of 20144253 is 35244102.

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

It is not a de Polignac number, because 20144253 - 2² = 20144249 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 (20144273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77950 + ... + 78207.

It is an arithmetic number, because the mean of its divisors is an integer number (3435476).

Almost surely, 2^20144253 is an apocalyptic number.

It is an amenable number.

20144253 is a deficient number, since it is larger than the sum of its proper divisors (7339555).

20144253 is a wasteful number, since it uses less digits than its factorization.

20144253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156203.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 20144253 is about 4488.2349537430. The cubic root of 20144253 is about 272.0928037205.

Adding to 20144253 its reverse (35244102), we get a palindrome (55388355).

The spelling of 20144253 in words is "twenty million, one hundred forty-four thousand, two hundred fifty-three".