53415143 has 4 divisors (see below), whose sum is σ = 53650680. Its totient is φ = 53179608.

The previous prime is 53415133. The next prime is 53415191. The reversal of 53415143 is 34151435.

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 53415143 - 2⁸ = 53414887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53415113) 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, 117428 + ... + 117881.

It is an arithmetic number, because the mean of its divisors is an integer number (13412670).

Almost surely, 2^53415143 is an apocalyptic number.

53415143 is a deficient number, since it is larger than the sum of its proper divisors (235537).

53415143 is a wasteful number, since it uses less digits than its factorization.

53415143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235536.

The product of its digits is 3600, while the sum is 26.

The square root of 53415143 is about 7308.5664120948. The cubic root of 53415143 is about 376.6067778366.

Adding to 53415143 its reverse (34151435), we get a palindrome (87566578).

The spelling of 53415143 in words is "fifty-three million, four hundred fifteen thousand, one hundred forty-three".