53440086 has 64 divisors (see below), whose sum is σ = 130176000. Its totient is φ = 14591808.

The previous prime is 53440031. The next prime is 53440091. The reversal of 53440086 is 68004435.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46770 + ... + 47898.

It is an arithmetic number, because the mean of its divisors is an integer number (2034000).

Almost surely, 2^53440086 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53440086, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65088000).

53440086 is an abundant number, since it is smaller than the sum of its proper divisors (76735914).

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

53440086 is a wasteful number, since it uses less digits than its factorization.

53440086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178 (or 1164 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 53440086 is about 7310.2726351348. The cubic root of 53440086 is about 376.6653894371.

The spelling of 53440086 in words is "fifty-three million, four hundred forty thousand, eighty-six".