78056533 has 2 divisors, whose sum is σ = 78056534. Its totient is φ = 78056532.

The previous prime is 78056527. The next prime is 78056551. The reversal of 78056533 is 33565087.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75724804 + 2331729 = 8702^2 + 1527^2 .

It is an emirp because it is prime and its reverse (33565087) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78056533 - 2⁵ = 78056501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78056492 and 78056501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78056513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39028266 + 39028267.

It is an arithmetic number, because the mean of its divisors is an integer number (39028267).

Almost surely, 2^78056533 is an apocalyptic number.

It is an amenable number.

78056533 is a deficient number, since it is larger than the sum of its proper divisors (1).

78056533 is an equidigital number, since it uses as much as digits as its factorization.

78056533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 78056533 is about 8834.9608374910. The cubic root of 78056533 is about 427.3690681188.

The spelling of 78056533 in words is "seventy-eight million, fifty-six thousand, five hundred thirty-three".