53145543 has 8 divisors (see below), whose sum is σ = 77302656. Its totient is φ = 32209400.

The previous prime is 53145517. The next prime is 53145577. The reversal of 53145543 is 34554135.

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

It is a cyclic number.

It is not a de Polignac number, because 53145543 - 2⁹ = 53145031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53145543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53145503) 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, 805203 + ... + 805268.

It is an arithmetic number, because the mean of its divisors is an integer number (9662832).

Almost surely, 2^53145543 is an apocalyptic number.

53145543 is a deficient number, since it is larger than the sum of its proper divisors (24157113).

53145543 is a wasteful number, since it uses less digits than its factorization.

53145543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1610485.

The product of its digits is 18000, while the sum is 30.

The square root of 53145543 is about 7290.0989705216. The cubic root of 53145543 is about 375.9720983332.

Adding to 53145543 its reverse (34554135), we get a palindrome (87699678).

The spelling of 53145543 in words is "fifty-three million, one hundred forty-five thousand, five hundred forty-three".