7057409 has 2 divisors, whose sum is σ = 7057410. Its totient is φ = 7057408.

The previous prime is 7057381. The next prime is 7057441. The reversal of 7057409 is 9047507.

It is an a-pointer prime, because the next prime (7057441) can be obtained adding 7057409 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6615184 + 442225 = 2572^2 + 665^2 .

It is a cyclic number.

It is not a de Polignac number, because 7057409 - 2⁸ = 7057153 is a prime.

It is not a weakly prime, because it can be changed into another prime (7057459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3528704 + 3528705.

It is an arithmetic number, because the mean of its divisors is an integer number (3528705).

It is a Proth number, since it is equal to 1723 ⋅ 2¹² + 1 and 1723 < 2¹².

Almost surely, 2^7057409 is an apocalyptic number.

It is an amenable number.

7057409 is a deficient number, since it is larger than the sum of its proper divisors (1).

7057409 is an equidigital number, since it uses as much as digits as its factorization.

7057409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 32.

The square root of 7057409 is about 2656.5784385182. The cubic root of 7057409 is about 191.8146449746.

The spelling of 7057409 in words is "seven million, fifty-seven thousand, four hundred nine".