52545643 has 2 divisors, whose sum is σ = 52545644. Its totient is φ = 52545642.

The previous prime is 52545637. The next prime is 52545673. The reversal of 52545643 is 34654525.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52545643 is a prime.

It is a super-2 number, since 2×52545643² = 5522089196566898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 52545599 and 52545608.

It is not a weakly prime, because it can be changed into another prime (52545673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26272821 + 26272822.

It is an arithmetic number, because the mean of its divisors is an integer number (26272822).

Almost surely, 2^52545643 is an apocalyptic number.

52545643 is a deficient number, since it is larger than the sum of its proper divisors (1).

52545643 is an equidigital number, since it uses as much as digits as its factorization.

52545643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 34.

The square root of 52545643 is about 7248.8373550522. The cubic root of 52545643 is about 374.5521005017.

The spelling of 52545643 in words is "fifty-two million, five hundred forty-five thousand, six hundred forty-three".