78513056 has 24 divisors (see below), whose sum is σ = 155709540. Its totient is φ = 38967808.

The previous prime is 78513023. The next prime is 78513059. The reversal of 78513056 is 65031587.

It can be written as a sum of positive squares in 2 ways, for example, as 78499600 + 13456 = 8860^2 + 116^2 .

It is not an unprimeable number, because it can be changed into a prime (78513059) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4571 + ... + 13338.

Almost surely, 2^78513056 is an apocalyptic number.

It is an amenable number.

78513056 is a deficient number, since it is larger than the sum of its proper divisors (77196484).

78513056 is a wasteful number, since it uses less digits than its factorization.

78513056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18056 (or 18048 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 78513056 is about 8860.7593354069. The cubic root of 78513056 is about 428.2006221648.

The spelling of 78513056 in words is "seventy-eight million, five hundred thirteen thousand, fifty-six".