53347399 has 4 divisors (see below), whose sum is σ = 60968464. Its totient is φ = 45726336.

The previous prime is 53347379. The next prime is 53347417. The reversal of 53347399 is 99374335.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99374335 = 5 ⋅19874867.

It is a cyclic number.

It is not a de Polignac number, because 53347399 - 2⁷ = 53347271 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 (53347319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3810522 + ... + 3810535.

It is an arithmetic number, because the mean of its divisors is an integer number (15242116).

Almost surely, 2^53347399 is an apocalyptic number.

53347399 is a deficient number, since it is larger than the sum of its proper divisors (7621065).

53347399 is an equidigital number, since it uses as much as digits as its factorization.

53347399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7621064.

The product of its digits is 306180, while the sum is 43.

The square root of 53347399 is about 7303.9303802816. The cubic root of 53347399 is about 376.4474993916.

The spelling of 53347399 in words is "fifty-three million, three hundred forty-seven thousand, three hundred ninety-nine".