78575 has 12 divisors (see below), whose sum is σ = 111600. Its totient is φ = 53760.

The previous prime is 78571. The next prime is 78577. The reversal of 78575 is 57587.

It is not a de Polignac number, because 78575 - 2² = 78571 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50 + ... + 399.

It is an arithmetic number, because the mean of its divisors is an integer number (9300).

2⁷⁸⁵⁷⁵ is an apocalyptic number.

78575 is a deficient number, since it is larger than the sum of its proper divisors (33025).

78575 is a wasteful number, since it uses less digits than its factorization.

78575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 461 counting only the distinct ones).

The product of its digits is 9800, while the sum is 32.

The square root of 78575 is about 280.3123258082. The cubic root of 78575 is about 42.8313204233.

It can be divided in two parts, 78 and 575, that multiplied together give a triangular number (44850 = T₂₉₉).

The spelling of 78575 in words is "seventy-eight thousand, five hundred seventy-five".