53143409 has 8 divisors (see below), whose sum is σ = 60495552. Its totient is φ = 46211440.

The previous prime is 53143403. The next prime is 53143423. The reversal of 53143409 is 90434135.

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

It is not a de Polignac number, because 53143409 - 2¹⁶ = 53077873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53143403) 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, 104774 + ... + 105279.

It is an arithmetic number, because the mean of its divisors is an integer number (7561944).

Almost surely, 2^53143409 is an apocalyptic number.

It is an amenable number.

53143409 is a deficient number, since it is larger than the sum of its proper divisors (7352143).

53143409 is a wasteful number, since it uses less digits than its factorization.

53143409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210087.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 53143409 is about 7289.9526061560. The cubic root of 53143409 is about 375.9670660191.

The spelling of 53143409 in words is "fifty-three million, one hundred forty-three thousand, four hundred nine".