123563541 has 4 divisors (see below), whose sum is σ = 164751392. Its totient is φ = 82375692.

The previous prime is 123563527. The next prime is 123563549. The reversal of 123563541 is 145365321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 123563541 - 2⁹ = 123563029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 123563499 and 123563508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123563549) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20593921 + ... + 20593926.

It is an arithmetic number, because the mean of its divisors is an integer number (41187848).

Almost surely, 2^123563541 is an apocalyptic number.

It is an amenable number.

123563541 is a deficient number, since it is larger than the sum of its proper divisors (41187851).

123563541 is an equidigital number, since it uses as much as digits as its factorization.

123563541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41187850.

The product of its digits is 10800, while the sum is 30.

The square root of 123563541 is about 11115.9138625666. The cubic root of 123563541 is about 498.0773375480.

The spelling of 123563541 in words is "one hundred twenty-three million, five hundred sixty-three thousand, five hundred forty-one".