52780578 has 8 divisors (see below), whose sum is σ = 105561168. Its totient is φ = 17593524.

The previous prime is 52780543. The next prime is 52780579. The reversal of 52780578 is 87508725.

It is a happy number.

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

52780578 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (52780579) 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, 4398376 + ... + 4398387.

It is an arithmetic number, because the mean of its divisors is an integer number (13195146).

Almost surely, 2^52780578 is an apocalyptic number.

52780578 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

52780578 is a wasteful number, since it uses less digits than its factorization.

52780578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8796768.

The product of its (nonzero) digits is 156800, while the sum is 42.

The square root of 52780578 is about 7265.0242945224. The cubic root of 52780578 is about 375.1094862531.

The spelling of 52780578 in words is "fifty-two million, seven hundred eighty thousand, five hundred seventy-eight".