2645453 has 2 divisors, whose sum is σ = 2645454. Its totient is φ = 2645452.

The previous prime is 2645431. The next prime is 2645477. The reversal of 2645453 is 3545462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2427364 + 218089 = 1558^2 + 467^2 .

It is a cyclic number.

It is not a de Polignac number, because 2645453 - 2¹⁰ = 2644429 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 2²⁰ + 6³ + 4³ + 5⁴ + 4⁵ + 5⁴ + 3¹³ .

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2645413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1322726 + 1322727.

It is an arithmetic number, because the mean of its divisors is an integer number (1322727).

2^2645453 is an apocalyptic number.

It is an amenable number.

2645453 is a deficient number, since it is larger than the sum of its proper divisors (1).

2645453 is an equidigital number, since it uses as much as digits as its factorization.

2645453 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 29.

The square root of 2645453 is about 1626.4848600586. The cubic root of 2645453 is about 138.3035570820.

Subtracting 2645453 from its reverse (3545462), we obtain a palindrome (900009).

The spelling of 2645453 in words is "two million, six hundred forty-five thousand, four hundred fifty-three".