53436543 has 8 divisors (see below), whose sum is σ = 71436288. Its totient is φ = 35530584.

The previous prime is 53436533. The next prime is 53436557. The reversal of 53436543 is 34563435.

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

It is not a de Polignac number, because 53436543 - 2¹² = 53432447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53436533) 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, 22105 + ... + 24402.

It is an arithmetic number, because the mean of its divisors is an integer number (8929536).

Almost surely, 2^53436543 is an apocalyptic number.

53436543 is a deficient number, since it is larger than the sum of its proper divisors (17999745).

53436543 is a wasteful number, since it uses less digits than its factorization.

53436543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46893.

The product of its digits is 64800, while the sum is 33.

The square root of 53436543 is about 7310.0303008948. The cubic root of 53436543 is about 376.6570651306.

Adding to 53436543 its reverse (34563435), we get a palindrome (87999978).

The spelling of 53436543 in words is "fifty-three million, four hundred thirty-six thousand, five hundred forty-three".