53445223 has 4 divisors (see below), whose sum is σ = 57556408. Its totient is φ = 49334040.

The previous prime is 53445221. The next prime is 53445239. The reversal of 53445223 is 32254435.

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 53445223 - 2¹ = 53445221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53445191 and 53445200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53445221) 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, 2055573 + ... + 2055598.

It is an arithmetic number, because the mean of its divisors is an integer number (14389102).

Almost surely, 2^53445223 is an apocalyptic number.

53445223 is a deficient number, since it is larger than the sum of its proper divisors (4111185).

53445223 is a wasteful number, since it uses less digits than its factorization.

53445223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4111184.

The product of its digits is 14400, while the sum is 28.

The square root of 53445223 is about 7310.6239815764. The cubic root of 53445223 is about 376.6774582058.

Adding to 53445223 its reverse (32254435), we get a palindrome (85699658).

The spelling of 53445223 in words is "fifty-three million, four hundred forty-five thousand, two hundred twenty-three".