5567721 has 8 divisors (see below), whose sum is σ = 7860384. Its totient is φ = 3493440.

The previous prime is 5567713. The next prime is 5567743. The reversal of 5567721 is 1277655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5567721 - 2³ = 5567713 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5567701) 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 7 ways as a sum of consecutive naturals, for example, 54535 + ... + 54636.

It is an arithmetic number, because the mean of its divisors is an integer number (982548).

Almost surely, 2^5567721 is an apocalyptic number.

5567721 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5567721 is a deficient number, since it is larger than the sum of its proper divisors (2292663).

5567721 is a wasteful number, since it uses less digits than its factorization.

5567721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109191.

The product of its digits is 14700, while the sum is 33.

The square root of 5567721 is about 2359.6018731981. The cubic root of 5567721 is about 177.2389444201.

It can be divided in two parts, 55 and 67721, that added together give a palindrome (67776).

The spelling of 5567721 in words is "five million, five hundred sixty-seven thousand, seven hundred twenty-one".