3155563 has 2 divisors, whose sum is σ = 3155564. Its totient is φ = 3155562.

The previous prime is 3155549. The next prime is 3155573. The reversal of 3155563 is 3655513.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (3655513) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3155563 - 2⁹ = 3155051 is a prime.

It is not a weakly prime, because it can be changed into another prime (3155513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1577781 + 1577782.

It is an arithmetic number, because the mean of its divisors is an integer number (1577782).

Almost surely, 2^3155563 is an apocalyptic number.

3155563 is a deficient number, since it is larger than the sum of its proper divisors (1).

3155563 is an equidigital number, since it uses as much as digits as its factorization.

3155563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6750, while the sum is 28.

The square root of 3155563 is about 1776.3904413163. The cubic root of 3155563 is about 146.6759641718.

The spelling of 3155563 in words is "three million, one hundred fifty-five thousand, five hundred sixty-three".