78573115 has 8 divisors (see below), whose sum is σ = 94446720. Its totient is φ = 62752512.

The previous prime is 78573109. The next prime is 78573119. The reversal of 78573115 is 51137587.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 78573115 - 2¹³ = 78564923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78573119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9910 + ... + 15979.

It is an arithmetic number, because the mean of its divisors is an integer number (11805840).

Almost surely, 2^78573115 is an apocalyptic number.

78573115 is a deficient number, since it is larger than the sum of its proper divisors (15873605).

78573115 is a wasteful number, since it uses less digits than its factorization.

78573115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26501.

The product of its digits is 29400, while the sum is 37.

The square root of 78573115 is about 8864.1477311696. The cubic root of 78573115 is about 428.3097791540.

Subtracting from 78573115 its reverse (51137587), we obtain a triangular number (27435528 = T₇₄₀₇).

The spelling of 78573115 in words is "seventy-eight million, five hundred seventy-three thousand, one hundred fifteen".