53231605 has 8 divisors (see below), whose sum is σ = 73003392. Its totient is φ = 36501648.

The previous prime is 53231599. The next prime is 53231609. The reversal of 53231605 is 50613235.

It is a happy number.

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 53231605 - 2⁹ = 53231093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53231605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53231609) 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, 760417 + ... + 760486.

It is an arithmetic number, because the mean of its divisors is an integer number (9125424).

Almost surely, 2^53231605 is an apocalyptic number.

It is an amenable number.

53231605 is a deficient number, since it is larger than the sum of its proper divisors (19771787).

53231605 is a wasteful number, since it uses less digits than its factorization.

53231605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1520915.

The product of its (nonzero) digits is 2700, while the sum is 25.

The square root of 53231605 is about 7295.9992461622. Note that the first 3 decimals coincide. The cubic root of 53231605 is about 376.1749341605.

The spelling of 53231605 in words is "fifty-three million, two hundred thirty-one thousand, six hundred five".