53143871 has 8 divisors (see below), whose sum is σ = 58926288. Its totient is φ = 47520000.

The previous prime is 53143843. The next prime is 53143873. The reversal of 53143871 is 17834135.

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-53143871 is a prime.

It is a super-3 number, since 3×53143871³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53143873) 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, 38930 + ... + 40271.

It is an arithmetic number, because the mean of its divisors is an integer number (7365786).

Almost surely, 2^53143871 is an apocalyptic number.

53143871 is a deficient number, since it is larger than the sum of its proper divisors (5782417).

53143871 is a wasteful number, since it uses less digits than its factorization.

53143871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79273.

The product of its digits is 10080, while the sum is 32.

The square root of 53143871 is about 7289.9842935359. The cubic root of 53143871 is about 375.9681555006.

The spelling of 53143871 in words is "fifty-three million, one hundred forty-three thousand, eight hundred seventy-one".