168224541 has 4 divisors (see below), whose sum is σ = 224299392. Its totient is φ = 112149692.

The previous prime is 168224527. The next prime is 168224543. The reversal of 168224541 is 145422861.

It is a happy number.

168224541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a cyclic number.

It is not a de Polignac number, because 168224541 - 2⁵ = 168224509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168224543) 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, 28037421 + ... + 28037426.

It is an arithmetic number, because the mean of its divisors is an integer number (56074848).

Almost surely, 2^168224541 is an apocalyptic number.

It is an amenable number.

168224541 is a deficient number, since it is larger than the sum of its proper divisors (56074851).

168224541 is an equidigital number, since it uses as much as digits as its factorization.

168224541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56074850.

The product of its digits is 15360, while the sum is 33.

The square root of 168224541 is about 12970.1403616152. The cubic root of 168224541 is about 552.0305558332.

The spelling of 168224541 in words is "one hundred sixty-eight million, two hundred twenty-four thousand, five hundred forty-one".