5590721 has 4 divisors (see below), whose sum is σ = 5596500. Its totient is φ = 5584944.

The previous prime is 5590709. The next prime is 5590723. The reversal of 5590721 is 1270955.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 5013121 + 577600 = 2239^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 5590721 - 2⁶ = 5590657 is a prime.

It is a super-2 number, since 2×5590721² = 62512322599682, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5590723) 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, 1046 + ... + 3503.

It is an arithmetic number, because the mean of its divisors is an integer number (1399125).

Almost surely, 2^5590721 is an apocalyptic number.

It is an amenable number.

5590721 is a deficient number, since it is larger than the sum of its proper divisors (5779).

5590721 is a wasteful number, since it uses less digits than its factorization.

5590721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5778.

The product of its (nonzero) digits is 3150, while the sum is 29.

The square root of 5590721 is about 2364.4705538450. The cubic root of 5590721 is about 177.4826644446.

The spelling of 5590721 in words is "five million, five hundred ninety thousand, seven hundred twenty-one".