20144417 has 2 divisors, whose sum is σ = 20144418. Its totient is φ = 20144416.

The previous prime is 20144387. The next prime is 20144437. The reversal of 20144417 is 71444102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16613776 + 3530641 = 4076^2 + 1879^2 .

It is a cyclic number.

It is not a de Polignac number, because 20144417 - 2¹⁴ = 20128033 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 20144392 and 20144401.

It is not a weakly prime, because it can be changed into another prime (20144437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10072208 + 10072209.

It is an arithmetic number, because the mean of its divisors is an integer number (10072209).

Almost surely, 2^20144417 is an apocalyptic number.

It is an amenable number.

20144417 is a deficient number, since it is larger than the sum of its proper divisors (1).

20144417 is an equidigital number, since it uses as much as digits as its factorization.

20144417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 896, while the sum is 23.

The square root of 20144417 is about 4488.2532236940. The cubic root of 20144417 is about 272.0935421131.

Adding to 20144417 its reverse (71444102), we get a palindrome (91588519).

It can be divided in two parts, 20144 and 417, that multiplied together give a palindrome (8400048).

The spelling of 20144417 in words is "twenty million, one hundred forty-four thousand, four hundred seventeen".