78610523 has 2 divisors, whose sum is σ = 78610524. Its totient is φ = 78610522.

The previous prime is 78610487. The next prime is 78610529. The reversal of 78610523 is 32501687.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (32501687) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78610523 - 2¹² = 78606427 is a prime.

It is a super-2 number, since 2×78610523² = 12359228652667058, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78610523.

It is not a weakly prime, because it can be changed into another prime (78610529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39305261 + 39305262.

It is an arithmetic number, because the mean of its divisors is an integer number (39305262).

Almost surely, 2^78610523 is an apocalyptic number.

78610523 is a deficient number, since it is larger than the sum of its proper divisors (1).

78610523 is an equidigital number, since it uses as much as digits as its factorization.

78610523 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 78610523 is about 8866.2575532183. The cubic root of 78610523 is about 428.3777399325.

The spelling of 78610523 in words is "seventy-eight million, six hundred ten thousand, five hundred twenty-three".