63223521 has 8 divisors (see below), whose sum is σ = 84962304. Its totient is φ = 41816880.

The previous prime is 63223513. The next prime is 63223529. The reversal of 63223521 is 12532236.

It is an interprime number because it is at equal distance from previous prime (63223513) and next prime (63223529).

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

It is not a de Polignac number, because 63223521 - 2³ = 63223513 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 63223491 and 63223500.

It is not an unprimeable number, because it can be changed into a prime (63223529) 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, 82590 + ... + 83351.

It is an arithmetic number, because the mean of its divisors is an integer number (10620288).

Almost surely, 2^63223521 is an apocalyptic number.

It is an amenable number.

63223521 is a deficient number, since it is larger than the sum of its proper divisors (21738783).

63223521 is a wasteful number, since it uses less digits than its factorization.

63223521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166071.

The product of its digits is 2160, while the sum is 24.

The square root of 63223521 is about 7951.3219655602. The cubic root of 63223521 is about 398.3757488646.

Adding to 63223521 its reverse (12532236), we get a palindrome (75755757).

The spelling of 63223521 in words is "sixty-three million, two hundred twenty-three thousand, five hundred twenty-one".