53878686 has 8 divisors (see below), whose sum is σ = 107757384. Its totient is φ = 17959560.

The previous prime is 53878681. The next prime is 53878691. The reversal of 53878686 is 68687835.

It is an interprime number because it is at equal distance from previous prime (53878681) and next prime (53878691).

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

53878686 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53878681) 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, 4489885 + ... + 4489896.

It is an arithmetic number, because the mean of its divisors is an integer number (13469673).

Almost surely, 2^53878686 is an apocalyptic number.

53878686 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.

53878686 is a wasteful number, since it uses less digits than its factorization.

53878686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8979786.

The product of its digits is 1935360, while the sum is 51.

The square root of 53878686 is about 7340.2102149734. The cubic root of 53878686 is about 377.6930544789.

The spelling of 53878686 in words is "fifty-three million, eight hundred seventy-eight thousand, six hundred eighty-six".