53591994 has 24 divisors (see below), whose sum is σ = 119862912. Its totient is φ = 17287560.

The previous prime is 53591987. The next prime is 53592013. The reversal of 53591994 is 49919535.

It is a happy number.

53591994 is a `hidden beast` number, since 53 + 591 + 9 + 9 + 4 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47464 + ... + 48579.

It is an arithmetic number, because the mean of its divisors is an integer number (4994288).

Almost surely, 2^53591994 is an apocalyptic number.

53591994 is an abundant number, since it is smaller than the sum of its proper divisors (66270918).

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

53591994 is a wasteful number, since it uses less digits than its factorization.

53591994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96082 (or 96079 counting only the distinct ones).

The product of its digits is 218700, while the sum is 45.

The square root of 53591994 is about 7320.6552985371. The cubic root of 53591994 is about 377.0219529557.

It can be divided in two parts, 535 and 91994, that added together give a palindrome (92529).

The spelling of 53591994 in words is "fifty-three million, five hundred ninety-one thousand, nine hundred ninety-four".