223541521 has 8 divisors (see below), whose sum is σ = 255992000. Its totient is φ = 191220048.

The previous prime is 223541519. The next prime is 223541543. The reversal of 223541521 is 125145322.

223541521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223541521 - 2¹ = 223541519 is a prime.

It is a super-2 number, since 2×223541521² = 99941623221986882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223541561) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28506 + ... + 35491.

It is an arithmetic number, because the mean of its divisors is an integer number (31999000).

Almost surely, 2^223541521 is an apocalyptic number.

It is an amenable number.

223541521 is a deficient number, since it is larger than the sum of its proper divisors (32450479).

223541521 is an equidigital number, since it uses as much as digits as its factorization.

223541521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64503.

The product of its digits is 2400, while the sum is 25.

The square root of 223541521 is about 14951.3049932105. The cubic root of 223541521 is about 606.9031624680.

Adding to 223541521 its reverse (125145322), we get a palindrome (348686843).

The spelling of 223541521 in words is "two hundred twenty-three million, five hundred forty-one thousand, five hundred twenty-one".