2358721 has 2 divisors, whose sum is σ = 2358722. Its totient is φ = 2358720.

The previous prime is 2358701. The next prime is 2358737. The reversal of 2358721 is 1278532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1718721 + 640000 = 1311^2 + 800^2 .

It is a cyclic number.

It is not a de Polignac number, because 2358721 - 2¹³ = 2350529 is a prime.

It is a Chen prime.

2358721 is a lucky number.

It is equal to p₁₇₃₄₆₇ and since 2358721 and 173467 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2358721.

It is not a weakly prime, because it can be changed into another prime (2358701) 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 as a sum of consecutive naturals, namely, 1179360 + 1179361.

It is an arithmetic number, because the mean of its divisors is an integer number (1179361).

2^2358721 is an apocalyptic number.

It is an amenable number.

2358721 is a deficient number, since it is larger than the sum of its proper divisors (1).

2358721 is an equidigital number, since it uses as much as digits as its factorization.

2358721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3360, while the sum is 28.

The square root of 2358721 is about 1535.8128141151. The cubic root of 2358721 is about 133.1145488353.

The spelling of 2358721 in words is "two million, three hundred fifty-eight thousand, seven hundred twenty-one".