53530143 has 8 divisors (see below), whose sum is σ = 73834800. Its totient is φ = 34456128.

The previous prime is 53530121. The next prime is 53530153. The reversal of 53530143 is 34103535.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-53530143 is a prime.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53530153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307558 + ... + 307731.

It is an arithmetic number, because the mean of its divisors is an integer number (9229350).

Almost surely, 2^53530143 is an apocalyptic number.

53530143 is a deficient number, since it is larger than the sum of its proper divisors (20304657).

53530143 is a wasteful number, since it uses less digits than its factorization.

53530143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615321.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 53530143 is about 7316.4296620688. The cubic root of 53530143 is about 376.8768556518.

Adding to 53530143 its reverse (34103535), we get a palindrome (87633678).

The spelling of 53530143 in words is "fifty-three million, five hundred thirty thousand, one hundred forty-three".