53406791 has 4 divisors (see below), whose sum is σ = 53479800. Its totient is φ = 53333784.

The previous prime is 53406779. The next prime is 53406823. The reversal of 53406791 is 19760435.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53406791 - 2¹⁸ = 53144647 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 (53406721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35396 + ... + 36873.

It is an arithmetic number, because the mean of its divisors is an integer number (13369950).

Almost surely, 2^53406791 is an apocalyptic number.

53406791 is a deficient number, since it is larger than the sum of its proper divisors (73009).

53406791 is an equidigital number, since it uses as much as digits as its factorization.

53406791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73008.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 53406791 is about 7307.9950054717. The cubic root of 53406791 is about 376.5871480489.

The spelling of 53406791 in words is "fifty-three million, four hundred six thousand, seven hundred ninety-one".