5391866 has 4 divisors (see below), whose sum is σ = 8087802. Its totient is φ = 2695932.

The previous prime is 5391857. The next prime is 5391889. The reversal of 5391866 is 6681935.

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

It can be written as a sum of positive squares in only one way, i.e., 5193841 + 198025 = 2279^2 + 445^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1347965 + ... + 1347968.

Almost surely, 2^5391866 is an apocalyptic number.

5391866 is a deficient number, since it is larger than the sum of its proper divisors (2695936).

5391866 is a wasteful number, since it uses less digits than its factorization.

5391866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2695935.

The product of its digits is 38880, while the sum is 38.

The square root of 5391866 is about 2322.0391900224. The cubic root of 5391866 is about 175.3529312847.

It can be divided in two parts, 53 and 91866, that added together give a palindrome (91919).

The spelling of 5391866 in words is "five million, three hundred ninety-one thousand, eight hundred sixty-six".