53519994 has 48 divisors (see below), whose sum is σ = 130744320. Its totient is φ = 16216200.

The previous prime is 53519989. The next prime is 53520007. The reversal of 53519994 is 49991535.

It is a happy number.

53519994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2439 + ... + 10629.

It is an arithmetic number, because the mean of its divisors is an integer number (2723840).

Almost surely, 2^53519994 is an apocalyptic number.

53519994 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 53519994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65372160).

53519994 is an abundant number, since it is smaller than the sum of its proper divisors (77224326).

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

53519994 is a wasteful number, since it uses less digits than its factorization.

53519994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8224 (or 8207 counting only the distinct ones).

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

The square root of 53519994 is about 7315.7360531938. The cubic root of 53519994 is about 376.8530362686.

The spelling of 53519994 in words is "fifty-three million, five hundred nineteen thousand, nine hundred ninety-four".