63553231 has 8 divisors (see below), whose sum is σ = 72779040. Its totient is φ = 54364128.

The previous prime is 63553229. The next prime is 63553247. The reversal of 63553231 is 13235536.

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

It is not a de Polignac number, because 63553231 - 2¹ = 63553229 is a prime.

It is a super-2 number, since 2×63553231² = 8078026341078722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63553231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63553291) 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, 5356 + ... + 12481.

It is an arithmetic number, because the mean of its divisors is an integer number (9097380).

Almost surely, 2^63553231 is an apocalyptic number.

63553231 is a deficient number, since it is larger than the sum of its proper divisors (9225809).

63553231 is a wasteful number, since it uses less digits than its factorization.

63553231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18353.

The product of its digits is 8100, while the sum is 28.

The square root of 63553231 is about 7972.0280355754. The cubic root of 63553231 is about 399.0670569850.

Adding to 63553231 its reverse (13235536), we get a palindrome (76788767).

The spelling of 63553231 in words is "sixty-three million, five hundred fifty-three thousand, two hundred thirty-one".