53040213 has 6 divisors (see below), whose sum is σ = 76613654. Its totient is φ = 35360136.

The previous prime is 53040209. The next prime is 53040223. The reversal of 53040213 is 31204035.

It can be written as a sum of positive squares in only one way, i.e., 27060804 + 25979409 = 5202^2 + 5097^2 .

It is not a de Polignac number, because 53040213 - 2² = 53040209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53040223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2946670 + ... + 2946687.

Almost surely, 2^53040213 is an apocalyptic number.

It is an amenable number.

53040213 is a deficient number, since it is larger than the sum of its proper divisors (23573441).

53040213 is a wasteful number, since it uses less digits than its factorization.

53040213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5893363 (or 5893360 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 53040213 is about 7282.8712057814. The cubic root of 53040213 is about 375.7235523607.

Adding to 53040213 its reverse (31204035), we get a palindrome (84244248).

The spelling of 53040213 in words is "fifty-three million, forty thousand, two hundred thirteen".