53393394 has 16 divisors (see below), whose sum is σ = 106888320. Its totient is φ = 17780880.

The previous prime is 53393393. The next prime is 53393399. The reversal of 53393394 is 49339335.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53393393) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3772 + ... + 11000.

It is an arithmetic number, because the mean of its divisors is an integer number (6680520).

Almost surely, 2^53393394 is an apocalyptic number.

53393394 is an abundant number, since it is smaller than the sum of its proper divisors (53494926).

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

53393394 is a wasteful number, since it uses less digits than its factorization.

53393394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8465.

The product of its digits is 131220, while the sum is 39.

The square root of 53393394 is about 7307.0783491078. The cubic root of 53393394 is about 376.5556566733. Note that the first 3 decimals are identical.

The spelling of 53393394 in words is "fifty-three million, three hundred ninety-three thousand, three hundred ninety-four".