5772721 has 2 divisors, whose sum is σ = 5772722. Its totient is φ = 5772720.

The previous prime is 5772719. The next prime is 5772731. The reversal of 5772721 is 1272775.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3920400 + 1852321 = 1980^2 + 1361^2 .

It is a cyclic number.

It is not a de Polignac number, because 5772721 - 2¹ = 5772719 is a prime.

Together with 5772719, it forms a pair of twin primes.

It is an Ulam number.

It is a d-powerful number, because it can be written as 5⁵ + 7³ + 7⁴ + 2 + 7⁸ + 2¹¹ + 1 .

It is equal to p₃₉₈₂₇₂ and since 5772721 and 398272 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (5772731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2886360 + 2886361.

It is an arithmetic number, because the mean of its divisors is an integer number (2886361).

Almost surely, 2^5772721 is an apocalyptic number.

It is an amenable number.

5772721 is a deficient number, since it is larger than the sum of its proper divisors (1).

5772721 is an equidigital number, since it uses as much as digits as its factorization.

5772721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6860, while the sum is 31.

The square root of 5772721 is about 2402.6487466960. The cubic root of 5772721 is about 179.3880556811.

The spelling of 5772721 in words is "five million, seven hundred seventy-two thousand, seven hundred twenty-one".