53344391 has 4 divisors (see below), whose sum is σ = 53410032. Its totient is φ = 53278752.

The previous prime is 53344373. The next prime is 53344399. The reversal of 53344391 is 19344335.

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 53344391 - 2¹⁸ = 53082247 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 (53344399) 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, 31586 + ... + 33231.

It is an arithmetic number, because the mean of its divisors is an integer number (13352508).

Almost surely, 2^53344391 is an apocalyptic number.

53344391 is a deficient number, since it is larger than the sum of its proper divisors (65641).

53344391 is an equidigital number, since it uses as much as digits as its factorization.

53344391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65640.

The product of its digits is 19440, while the sum is 32.

The square root of 53344391 is about 7303.7244608487. The cubic root of 53344391 is about 376.4404239116.

It can be divided in two parts, 53344 and 391, that added together give a palindrome (53735).

The spelling of 53344391 in words is "fifty-three million, three hundred forty-four thousand, three hundred ninety-one".