53893686 has 128 divisors (see below), whose sum is σ = 143327232. Its totient is φ = 13104000.

The previous prime is 53893681. The next prime is 53893691. The reversal of 53893686 is 68639835.

It is an interprime number because it is at equal distance from previous prime (53893681) and next prime (53893691).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53893681) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 759031 + ... + 759101.

It is an arithmetic number, because the mean of its divisors is an integer number (1119744).

Almost surely, 2^53893686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53893686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71663616).

53893686 is an abundant number, since it is smaller than the sum of its proper divisors (89433546).

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

53893686 is a wasteful number, since it uses less digits than its factorization.

53893686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178.

The product of its digits is 933120, while the sum is 48.

The square root of 53893686 is about 7341.2319129694. The cubic root of 53893686 is about 377.7281015483.

The spelling of 53893686 in words is "fifty-three million, eight hundred ninety-three thousand, six hundred eighty-six".