2455643 has 2 divisors, whose sum is σ = 2455644. Its totient is φ = 2455642.

The previous prime is 2455619. The next prime is 2455657. The reversal of 2455643 is 3465542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2455643 - 2¹⁰ = 2454619 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2451643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1227821 + 1227822.

It is an arithmetic number, because the mean of its divisors is an integer number (1227822).

2^2455643 is an apocalyptic number.

2455643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2455643 is an equidigital number, since it uses as much as digits as its factorization.

2455643 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 2455643 is about 1567.0491377107. The cubic root of 2455643 is about 134.9133966730.

The spelling of 2455643 in words is "two million, four hundred fifty-five thousand, six hundred forty-three".