52641643 has 4 divisors (see below), whose sum is σ = 52709320. Its totient is φ = 52573968.

The previous prime is 52641619. The next prime is 52641661. The reversal of 52641643 is 34614625.

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

It is a cyclic number.

It is not a de Polignac number, because 52641643 - 2²¹ = 50544491 is a prime.

It is a super-2 number, since 2×52641643² = 5542285155478898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52641143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32658 + ... + 34231.

It is an arithmetic number, because the mean of its divisors is an integer number (13177330).

Almost surely, 2^52641643 is an apocalyptic number.

52641643 is a deficient number, since it is larger than the sum of its proper divisors (67677).

52641643 is an equidigital number, since it uses as much as digits as its factorization.

52641643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67676.

The product of its digits is 17280, while the sum is 31.

The square root of 52641643 is about 7255.4560849060. The cubic root of 52641643 is about 374.7800618459.

The spelling of 52641643 in words is "fifty-two million, six hundred forty-one thousand, six hundred forty-three".