5393721 has 16 divisors (see below), whose sum is σ = 7557120. Its totient is φ = 3417360.

The previous prime is 5393711. The next prime is 5393723. The reversal of 5393721 is 1273935.

It is not a de Polignac number, because 5393721 - 2⁷ = 5393593 is a prime.

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5393723) 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 15 ways as a sum of consecutive naturals, for example, 4996 + ... + 5978.

It is an arithmetic number, because the mean of its divisors is an integer number (472320).

Almost surely, 2^5393721 is an apocalyptic number.

It is an amenable number.

5393721 is a deficient number, since it is larger than the sum of its proper divisors (2163399).

5393721 is a wasteful number, since it uses less digits than its factorization.

5393721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076.

The product of its digits is 5670, while the sum is 30.

The square root of 5393721 is about 2322.4385890697. The cubic root of 5393721 is about 175.3730382626.

The spelling of 5393721 in words is "five million, three hundred ninety-three thousand, seven hundred twenty-one".