78146527 has 2 divisors, whose sum is σ = 78146528. Its totient is φ = 78146526.

The previous prime is 78146521. The next prime is 78146531. The reversal of 78146527 is 72564187.

It is a strong prime.

It is an emirp because it is prime and its reverse (72564187) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78146527 is a prime.

It is a super-2 number, since 2×78146527² = 12213759364323458, 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 78146527.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78146521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39073263 + 39073264.

It is an arithmetic number, because the mean of its divisors is an integer number (39073264).

Almost surely, 2^78146527 is an apocalyptic number.

78146527 is a deficient number, since it is larger than the sum of its proper divisors (1).

78146527 is an equidigital number, since it uses as much as digits as its factorization.

78146527 is an evil number, because the sum of its binary digits is even.

The product of its digits is 94080, while the sum is 40.

The square root of 78146527 is about 8840.0524319712. The cubic root of 78146527 is about 427.5332477590.

It can be divided in two parts, 7814 and 6527, that added together give a palindrome (14341).

The spelling of 78146527 in words is "seventy-eight million, one hundred forty-six thousand, five hundred twenty-seven".