4827721 has 2 divisors, whose sum is σ = 4827722. Its totient is φ = 4827720.

The previous prime is 4827707. The next prime is 4827737. The reversal of 4827721 is 1277284.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4562496 + 265225 = 2136^2 + 515^2 .

It is a cyclic number.

It is not a de Polignac number, because 4827721 - 2¹¹ = 4825673 is a prime.

It is not a weakly prime, because it can be changed into another prime (4827751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2413860 + 2413861.

It is an arithmetic number, because the mean of its divisors is an integer number (2413861).

Almost surely, 2^4827721 is an apocalyptic number.

It is an amenable number.

4827721 is a deficient number, since it is larger than the sum of its proper divisors (1).

4827721 is an equidigital number, since it uses as much as digits as its factorization.

4827721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 31.

The square root of 4827721 is about 2197.2075459546. The cubic root of 4827721 is about 169.0106432147.

The spelling of 4827721 in words is "four million, eight hundred twenty-seven thousand, seven hundred twenty-one".