20144953 has 4 divisors (see below), whose sum is σ = 20154100. Its totient is φ = 20135808.

The previous prime is 20144951. The next prime is 20144963. The reversal of 20144953 is 35944102.

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 can be written as a sum of positive squares in 2 ways, for example, as 1937664 + 18207289 = 1392^2 + 4267^2 .

It is a cyclic number.

It is not a de Polignac number, because 20144953 - 2¹ = 20144951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20144951) 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 3 ways as a sum of consecutive naturals, for example, 973 + ... + 6421.

It is an arithmetic number, because the mean of its divisors is an integer number (5038525).

Almost surely, 2^20144953 is an apocalyptic number.

It is an amenable number.

20144953 is a deficient number, since it is larger than the sum of its proper divisors (9147).

20144953 is an equidigital number, since it uses as much as digits as its factorization.

20144953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9146.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 20144953 is about 4488.3129347228. The cubic root of 20144953 is about 272.0959553681.

It can be divided in two parts, 201 and 44953, that added together give a palindrome (45154).

The spelling of 20144953 in words is "twenty million, one hundred forty-four thousand, nine hundred fifty-three".