53000442 has 24 divisors (see below), whose sum is σ = 125274240. Its totient is φ = 16060680.

The previous prime is 53000393. The next prime is 53000449. The reversal of 53000442 is 24400035.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (53000449) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133642 + ... + 134037.

It is an arithmetic number, because the mean of its divisors is an integer number (5219760).

Almost surely, 2^53000442 is an apocalyptic number.

53000442 is an abundant number, since it is smaller than the sum of its proper divisors (72273798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53000442 is a wasteful number, since it uses less digits than its factorization.

53000442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267698 (or 267695 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 53000442 is about 7280.1402459019. The cubic root of 53000442 is about 375.6296196194.

Adding to 53000442 its reverse (24400035), we get a palindrome (77400477).

The spelling of 53000442 in words is "fifty-three million, four hundred forty-two", and thus it is an aban number.