53143505 has 8 divisors (see below), whose sum is σ = 64818024. Its totient is φ = 41817600.

The previous prime is 53143499. The next prime is 53143543. The reversal of 53143505 is 50534135.

It can be written as a sum of positive squares in 4 ways, for example, as 1317904 + 51825601 = 1148^2 + 7199^2 .

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

It is not a de Polignac number, because 53143505 - 2⁸ = 53143249 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86816 + ... + 87425.

It is an arithmetic number, because the mean of its divisors is an integer number (8102253).

Almost surely, 2^53143505 is an apocalyptic number.

It is an amenable number.

53143505 is a deficient number, since it is larger than the sum of its proper divisors (11674519).

53143505 is a wasteful number, since it uses less digits than its factorization.

53143505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174307.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 53143505 is about 7289.9591905579. The cubic root of 53143505 is about 375.9672924054.

The spelling of 53143505 in words is "fifty-three million, one hundred forty-three thousand, five hundred five".