53388994 has 8 divisors (see below), whose sum is σ = 80909388. Its totient is φ = 26419200.

The previous prime is 53388991. The next prime is 53389001. The reversal of 53388994 is 49988335.

53388994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 48121969 + 5267025 = 6937^2 + 2295^2 .

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

It is not an unprimeable number, because it can be changed into a prime (53388991) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 137407 + ... + 137794.

Almost surely, 2^53388994 is an apocalyptic number.

53388994 is a deficient number, since it is larger than the sum of its proper divisors (27520394).

53388994 is a wasteful number, since it uses less digits than its factorization.

53388994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275300.

The product of its digits is 933120, while the sum is 49.

The square root of 53388994 is about 7306.7772649780. Note that the first 3 decimals coincide. The cubic root of 53388994 is about 376.5453127570.

The spelling of 53388994 in words is "fifty-three million, three hundred eighty-eight thousand, nine hundred ninety-four".