78523883 has 2 divisors, whose sum is σ = 78523884. Its totient is φ = 78523882.

The previous prime is 78523849. The next prime is 78523919. The reversal of 78523883 is 38832587.

It is a weak prime.

It is an emirp because it is prime and its reverse (38832587) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78523883 - 2²² = 74329579 is a prime.

It is not a weakly prime, because it can be changed into another prime (78523843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39261941 + 39261942.

It is an arithmetic number, because the mean of its divisors is an integer number (39261942).

Almost surely, 2^78523883 is an apocalyptic number.

78523883 is a deficient number, since it is larger than the sum of its proper divisors (1).

78523883 is an equidigital number, since it uses as much as digits as its factorization.

78523883 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 44.

The square root of 78523883 is about 8861.3702664994. The cubic root of 78523883 is about 428.2203043054.

The spelling of 78523883 in words is "seventy-eight million, five hundred twenty-three thousand, eight hundred eighty-three".