53404143 has 8 divisors (see below), whose sum is σ = 76682928. Its totient is φ = 32864064.

The previous prime is 53404129. The next prime is 53404147. The reversal of 53404143 is 34140435.

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

It is not a de Polignac number, because 53404143 - 2⁵ = 53404111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53404147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 684630 + ... + 684707.

It is an arithmetic number, because the mean of its divisors is an integer number (9585366).

Almost surely, 2^53404143 is an apocalyptic number.

53404143 is a deficient number, since it is larger than the sum of its proper divisors (23278785).

53404143 is a wasteful number, since it uses less digits than its factorization.

53404143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1369353.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 53404143 is about 7307.8138317831. The cubic root of 53404143 is about 376.5809240011.

Adding to 53404143 its reverse (34140435), we get a palindrome (87544578).

The spelling of 53404143 in words is "fifty-three million, four hundred four thousand, one hundred forty-three".