11945541 has 4 divisors (see below), whose sum is σ = 15927392. Its totient is φ = 7963692.

The previous prime is 11945519. The next prime is 11945581. The reversal of 11945541 is 14554911.

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 11945541 - 2¹¹ = 11943493 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11945499 and 11945508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11945581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1990921 + ... + 1990926.

It is an arithmetic number, because the mean of its divisors is an integer number (3981848).

Almost surely, 2^11945541 is an apocalyptic number.

It is an amenable number.

11945541 is a deficient number, since it is larger than the sum of its proper divisors (3981851).

11945541 is an equidigital number, since it uses as much as digits as its factorization.

11945541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3981850.

The product of its digits is 3600, while the sum is 30.

The square root of 11945541 is about 3456.2321970608. The cubic root of 11945541 is about 228.5959899760.

The spelling of 11945541 in words is "eleven million, nine hundred forty-five thousand, five hundred forty-one".