53228609 has 4 divisors (see below), whose sum is σ = 60832704. Its totient is φ = 45624516.

The previous prime is 53228599. The next prime is 53228657. The reversal of 53228609 is 90682235.

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 not a de Polignac number, because 53228609 - 2⁸ = 53228353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53228689) 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, 3802037 + ... + 3802050.

It is an arithmetic number, because the mean of its divisors is an integer number (15208176).

Almost surely, 2^53228609 is an apocalyptic number.

It is an amenable number.

53228609 is a deficient number, since it is larger than the sum of its proper divisors (7604095).

53228609 is an equidigital number, since it uses as much as digits as its factorization.

53228609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7604094.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 53228609 is about 7295.7939252695. The cubic root of 53228609 is about 376.1678766913.

It can be divided in two parts, 5322 and 8609, that added together give a palindrome (13931).

The spelling of 53228609 in words is "fifty-three million, two hundred twenty-eight thousand, six hundred nine".