78495533 has 2 divisors, whose sum is σ = 78495534. Its totient is φ = 78495532.

The previous prime is 78495509. The next prime is 78495553. The reversal of 78495533 is 33559487.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46267204 + 32228329 = 6802^2 + 5677^2 .

It is a cyclic number.

It is not a de Polignac number, because 78495533 - 2¹⁶ = 78429997 is a prime.

It is a Chen prime.

It is equal to p_4586678 and since 78495533 and 4586678 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78495553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39247766 + 39247767.

It is an arithmetic number, because the mean of its divisors is an integer number (39247767).

Almost surely, 2^78495533 is an apocalyptic number.

It is an amenable number.

78495533 is a deficient number, since it is larger than the sum of its proper divisors (1).

78495533 is an equidigital number, since it uses as much as digits as its factorization.

78495533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 453600, while the sum is 44.

The square root of 78495533 is about 8859.7704823545. The cubic root of 78495533 is about 428.1687636936.

The spelling of 78495533 in words is "seventy-eight million, four hundred ninety-five thousand, five hundred thirty-three".