53143361 has 4 divisors (see below), whose sum is σ = 55940400. Its totient is φ = 50346324.

The previous prime is 53143333. The next prime is 53143367. The reversal of 53143361 is 16334135.

53143361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16334135 = 5 ⋅3266827.

It is a cyclic number.

It is not a de Polignac number, because 53143361 - 2⁶ = 53143297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53143361.

It is not an unprimeable number, because it can be changed into a prime (53143367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1398491 + ... + 1398528.

It is an arithmetic number, because the mean of its divisors is an integer number (13985100).

Almost surely, 2^53143361 is an apocalyptic number.

It is an amenable number.

53143361 is a deficient number, since it is larger than the sum of its proper divisors (2797039).

53143361 is a wasteful number, since it uses less digits than its factorization.

53143361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2797038.

The product of its digits is 3240, while the sum is 26.

The square root of 53143361 is about 7289.9493139527. The cubic root of 53143361 is about 375.9669528259.

Adding to 53143361 its reverse (16334135), we get a palindrome (69477496).

The spelling of 53143361 in words is "fifty-three million, one hundred forty-three thousand, three hundred sixty-one".