78826523 has 4 divisors (see below), whose sum is σ = 78876600. Its totient is φ = 78776448.

The previous prime is 78826507. The next prime is 78826541. The reversal of 78826523 is 32562887.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32562887 = 7 ⋅4651841.

It is a cyclic number.

It is not a de Polignac number, because 78826523 - 2⁴ = 78826507 is a prime.

It is a super-3 number, since 3×78826523³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78826123) 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 in 3 ways as a sum of consecutive naturals, for example, 22598 + ... + 25851.

It is an arithmetic number, because the mean of its divisors is an integer number (19719150).

Almost surely, 2^78826523 is an apocalyptic number.

78826523 is a deficient number, since it is larger than the sum of its proper divisors (50077).

78826523 is a wasteful number, since it uses less digits than its factorization.

78826523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50076.

The product of its digits is 161280, while the sum is 41.

The square root of 78826523 is about 8878.4302103469. The cubic root of 78826523 is about 428.7697356809.

The spelling of 78826523 in words is "seventy-eight million, eight hundred twenty-six thousand, five hundred twenty-three".