52778443 has 2 divisors, whose sum is σ = 52778444. Its totient is φ = 52778442.

The previous prime is 52778437. The next prime is 52778471. The reversal of 52778443 is 34487725.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52778443 - 2⁹ = 52777931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52778396 and 52778405.

It is not a weakly prime, because it can be changed into another prime (52778413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26389221 + 26389222.

It is an arithmetic number, because the mean of its divisors is an integer number (26389222).

Almost surely, 2^52778443 is an apocalyptic number.

52778443 is a deficient number, since it is larger than the sum of its proper divisors (1).

52778443 is an equidigital number, since it uses as much as digits as its factorization.

52778443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 188160, while the sum is 40.

The square root of 52778443 is about 7264.8773561568. The cubic root of 52778443 is about 375.1044283980.

The spelling of 52778443 in words is "fifty-two million, seven hundred seventy-eight thousand, four hundred forty-three".