53223331 has 4 divisors (see below), whose sum is σ = 60826672. Its totient is φ = 45619992.

The previous prime is 53223329. The next prime is 53223343. The reversal of 53223331 is 13332235.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53223331 - 2¹ = 53223329 is a prime.

It is a super-2 number, since 2×53223331² = 5665445925471122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53223361) 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, 3801660 + ... + 3801673.

It is an arithmetic number, because the mean of its divisors is an integer number (15206668).

Almost surely, 2^53223331 is an apocalyptic number.

53223331 is a deficient number, since it is larger than the sum of its proper divisors (7603341).

53223331 is an equidigital number, since it uses as much as digits as its factorization.

53223331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7603340.

The product of its digits is 1620, while the sum is 22.

The square root of 53223331 is about 7295.4322010420. The cubic root of 53223331 is about 376.1554430288.

Adding to 53223331 its reverse (13332235), we get a palindrome (66555566).

The spelling of 53223331 in words is "fifty-three million, two hundred twenty-three thousand, three hundred thirty-one".