2452721 has 2 divisors, whose sum is σ = 2452722. Its totient is φ = 2452720.

The previous prime is 2452717. The next prime is 2452753. The reversal of 2452721 is 1272542.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2062096 + 390625 = 1436^2 + 625^2 .

It is a cyclic number.

It is not a de Polignac number, because 2452721 - 2² = 2452717 is a prime.

It is not a weakly prime, because it can be changed into another prime (2452321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1226360 + 1226361.

It is an arithmetic number, because the mean of its divisors is an integer number (1226361).

2^2452721 is an apocalyptic number.

It is an amenable number.

2452721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2452721 is an equidigital number, since it uses as much as digits as its factorization.

2452721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1120, while the sum is 23.

The square root of 2452721 is about 1566.1165346168. The cubic root of 2452721 is about 134.8598637273.

The spelling of 2452721 in words is "two million, four hundred fifty-two thousand, seven hundred twenty-one".