20113453 has 2 divisors, whose sum is σ = 20113454. Its totient is φ = 20113452.

The previous prime is 20113433. The next prime is 20113481. The reversal of 20113453 is 35431102.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15264649 + 4848804 = 3907^2 + 2202^2 .

It is a cyclic number.

It is not a de Polignac number, because 20113453 - 2⁵ = 20113421 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20113453.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20113403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10056726 + 10056727.

It is an arithmetic number, because the mean of its divisors is an integer number (10056727).

Almost surely, 2^20113453 is an apocalyptic number.

It is an amenable number.

20113453 is a deficient number, since it is larger than the sum of its proper divisors (1).

20113453 is an equidigital number, since it uses as much as digits as its factorization.

20113453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 20113453 is about 4484.8024482690. The cubic root of 20113453 is about 271.9540588860.

Adding to 20113453 its reverse (35431102), we get a palindrome (55544555).

The spelling of 20113453 in words is "twenty million, one hundred thirteen thousand, four hundred fifty-three".