52543519 has 4 divisors (see below), whose sum is σ = 60049744. Its totient is φ = 45037296.

The previous prime is 52543499. The next prime is 52543537. The reversal of 52543519 is 91534525.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52543519 is a prime.

It is a super-2 number, since 2×52543519² = 5521642777806722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52543619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3753102 + ... + 3753115.

It is an arithmetic number, because the mean of its divisors is an integer number (15012436).

Almost surely, 2^52543519 is an apocalyptic number.

52543519 is a deficient number, since it is larger than the sum of its proper divisors (7506225).

52543519 is an equidigital number, since it uses as much as digits as its factorization.

52543519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7506224.

The product of its digits is 27000, while the sum is 34.

The square root of 52543519 is about 7248.6908473186. The cubic root of 52543519 is about 374.5470537186.

It can be divided in two parts, 525 and 43519, that added together give a palindrome (44044).

The spelling of 52543519 in words is "fifty-two million, five hundred forty-three thousand, five hundred nineteen".