52978278 has 8 divisors (see below), whose sum is σ = 105956568. Its totient is φ = 17659424.

The previous prime is 52978271. The next prime is 52978297. The reversal of 52978278 is 87287925.

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

52978278 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52978271) 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 3 ways as a sum of consecutive naturals, for example, 4414851 + ... + 4414862.

It is an arithmetic number, because the mean of its divisors is an integer number (13244571).

Almost surely, 2^52978278 is an apocalyptic number.

52978278 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.

52978278 is a wasteful number, since it uses less digits than its factorization.

52978278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8829718.

The product of its digits is 564480, while the sum is 48.

The square root of 52978278 is about 7278.6178633034. The cubic root of 52978278 is about 375.5772514040.

The spelling of 52978278 in words is "fifty-two million, nine hundred seventy-eight thousand, two hundred seventy-eight".