53533391 has 8 divisors (see below), whose sum is σ = 58637520. Its totient is φ = 48646528.

The previous prime is 53533379. The next prime is 53533399. The reversal of 53533391 is 19333535.

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

It is a cyclic number.

It is not a de Polignac number, because 53533391 - 2⁶ = 53533327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53533399) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53801 + ... + 54786.

It is an arithmetic number, because the mean of its divisors is an integer number (7329690).

Almost surely, 2^53533391 is an apocalyptic number.

53533391 is a deficient number, since it is larger than the sum of its proper divisors (5104129).

53533391 is a wasteful number, since it uses less digits than its factorization.

53533391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108633.

The product of its digits is 18225, while the sum is 32.

The square root of 53533391 is about 7316.6516248896. The cubic root of 53533391 is about 376.8844779695.

The spelling of 53533391 in words is "fifty-three million, five hundred thirty-three thousand, three hundred ninety-one".