53393438 has 20 divisors (see below), whose sum is σ = 93441360. Its totient is φ = 22880844.

The previous prime is 53393423. The next prime is 53393443. The reversal of 53393438 is 83439335.

It is a super-3 number, since 3×53393438³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 758 + ... + 10361.

It is an arithmetic number, because the mean of its divisors is an integer number (4672068).

Almost surely, 2^53393438 is an apocalyptic number.

53393438 is a deficient number, since it is larger than the sum of its proper divisors (40047922).

53393438 is an equidigital number, since it uses as much as digits as its factorization.

53393438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11149 (or 11128 counting only the distinct ones).

The product of its digits is 116640, while the sum is 38.

The square root of 53393438 is about 7307.0813598864. The cubic root of 53393438 is about 376.5557601096. Note that the first 3 decimals are identical.

The spelling of 53393438 in words is "fifty-three million, three hundred ninety-three thousand, four hundred thirty-eight".