20455453 has 2 divisors, whose sum is σ = 20455454. Its totient is φ = 20455452.

The previous prime is 20455451. The next prime is 20455459. The reversal of 20455453 is 35455402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16016004 + 4439449 = 4002^2 + 2107^2 .

It is a cyclic number.

It is not a de Polignac number, because 20455453 - 2¹ = 20455451 is a prime.

Together with 20455451, it forms a pair of twin primes.

It is equal to p_1297612 and since 20455453 and 1297612 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20455451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10227726 + 10227727.

It is an arithmetic number, because the mean of its divisors is an integer number (10227727).

Almost surely, 2^20455453 is an apocalyptic number.

It is an amenable number.

20455453 is a deficient number, since it is larger than the sum of its proper divisors (1).

20455453 is an equidigital number, since it uses as much as digits as its factorization.

20455453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 28.

The square root of 20455453 is about 4522.7705004787. The cubic root of 20455453 is about 273.4867984453.

The spelling of 20455453 in words is "twenty million, four hundred fifty-five thousand, four hundred fifty-three".