53545223 has 16 divisors (see below), whose sum is σ = 59006880. Its totient is φ = 48362496.

The previous prime is 53545207. The next prime is 53545231. The reversal of 53545223 is 32254535.

It is a cyclic number.

It is not a de Polignac number, because 53545223 - 2⁴ = 53545207 is a prime.

It is a super-2 number, since 2×53545223² = 5734181812239458, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53545243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154136 + ... + 154482.

It is an arithmetic number, because the mean of its divisors is an integer number (3687930).

Almost surely, 2^53545223 is an apocalyptic number.

53545223 is a deficient number, since it is larger than the sum of its proper divisors (5461657).

53545223 is a wasteful number, since it uses less digits than its factorization.

53545223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706.

The product of its digits is 18000, while the sum is 29.

The square root of 53545223 is about 7317.4601467996. The cubic root of 53545223 is about 376.9122423770.

Adding to 53545223 its reverse (32254535), we get a palindrome (85799758).

The spelling of 53545223 in words is "fifty-three million, five hundred forty-five thousand, two hundred twenty-three".