78032529 has 6 divisors (see below), whose sum is σ = 112713666. Its totient is φ = 52021680.

The previous prime is 78032527. The next prime is 78032531. The reversal of 78032529 is 92523087.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (78032527) and next prime (78032531).

It can be written as a sum of positive squares in only one way, i.e., 76475025 + 1557504 = 8745^2 + 1248^2 .

It is not a de Polignac number, because 78032529 - 2¹ = 78032527 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 78032493 and 78032502.

It is not an unprimeable number, because it can be changed into a prime (78032527) 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 5 ways as a sum of consecutive naturals, for example, 4335132 + ... + 4335149.

It is an arithmetic number, because the mean of its divisors is an integer number (18785611).

Almost surely, 2^78032529 is an apocalyptic number.

It is an amenable number.

78032529 is a deficient number, since it is larger than the sum of its proper divisors (34681137).

78032529 is a wasteful number, since it uses less digits than its factorization.

78032529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8670287 (or 8670284 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 78032529 is about 8833.6022663464. The cubic root of 78032529 is about 427.3252553484.

The spelling of 78032529 in words is "seventy-eight million, thirty-two thousand, five hundred twenty-nine".