52391347 has 4 divisors (see below), whose sum is σ = 52444080. Its totient is φ = 52338616.

The previous prime is 52391293. The next prime is 52391359. The reversal of 52391347 is 74319325.

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 52391347 - 2⁷ = 52391219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52391047) 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 3 ways as a sum of consecutive naturals, for example, 24847 + ... + 26872.

It is an arithmetic number, because the mean of its divisors is an integer number (13111020).

Almost surely, 2^52391347 is an apocalyptic number.

52391347 is a deficient number, since it is larger than the sum of its proper divisors (52733).

52391347 is a wasteful number, since it uses less digits than its factorization.

52391347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52732.

The product of its digits is 22680, while the sum is 34.

The square root of 52391347 is about 7238.1867204432. The cubic root of 52391347 is about 374.1851271612.

The spelling of 52391347 in words is "fifty-two million, three hundred ninety-one thousand, three hundred forty-seven".