52643819 has 2 divisors, whose sum is σ = 52643820. Its totient is φ = 52643818.

The previous prime is 52643777. The next prime is 52643821. The reversal of 52643819 is 91834625.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 52643819 - 2²⁴ = 35866603 is a prime.

It is a super-2 number, since 2×52643819² = 5542743357809522, which contains 22 as substring.

Together with 52643821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (52643879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26321909 + 26321910.

It is an arithmetic number, because the mean of its divisors is an integer number (26321910).

Almost surely, 2^52643819 is an apocalyptic number.

52643819 is a deficient number, since it is larger than the sum of its proper divisors (1).

52643819 is an equidigital number, since it uses as much as digits as its factorization.

52643819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 38.

The square root of 52643819 is about 7255.6060394704. The cubic root of 52643819 is about 374.7852257563.

The spelling of 52643819 in words is "fifty-two million, six hundred forty-three thousand, eight hundred nineteen".