5390243 has 4 divisors (see below), whose sum is σ = 5673960. Its totient is φ = 5106528.

The previous prime is 5390239. The next prime is 5390267. The reversal of 5390243 is 3420935.

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 5390243 - 2² = 5390239 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5390233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141830 + ... + 141867.

It is an arithmetic number, because the mean of its divisors is an integer number (1418490).

Almost surely, 2^5390243 is an apocalyptic number.

5390243 is a deficient number, since it is larger than the sum of its proper divisors (283717).

5390243 is a wasteful number, since it uses less digits than its factorization.

5390243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283716.

The product of its (nonzero) digits is 3240, while the sum is 26.

The square root of 5390243 is about 2321.6896864138. The cubic root of 5390243 is about 175.3353352510.

The spelling of 5390243 in words is "five million, three hundred ninety thousand, two hundred forty-three".