77130527 has 2 divisors, whose sum is σ = 77130528. Its totient is φ = 77130526.

The previous prime is 77130509. The next prime is 77130577. The reversal of 77130527 is 72503177.

It is a weak prime.

It is an emirp because it is prime and its reverse (72503177) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77130527 - 2⁶ = 77130463 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 77130493 and 77130502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77130577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38565263 + 38565264.

It is an arithmetic number, because the mean of its divisors is an integer number (38565264).

Almost surely, 2^77130527 is an apocalyptic number.

77130527 is a deficient number, since it is larger than the sum of its proper divisors (1).

77130527 is an equidigital number, since it uses as much as digits as its factorization.

77130527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10290, while the sum is 32.

The square root of 77130527 is about 8782.3987042265. The cubic root of 77130527 is about 425.6723420350.

The spelling of 77130527 in words is "seventy-seven million, one hundred thirty thousand, five hundred twenty-seven".