1051409 has 2 divisors, whose sum is σ = 1051410. Its totient is φ = 1051408.

The previous prime is 1051397. The next prime is 1051417. The reversal of 1051409 is 9041501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1050625 + 784 = 1025^2 + 28^2 .

It is a cyclic number.

It is not a de Polignac number, because 1051409 - 2⁸ = 1051153 is a prime.

It is a super-2 number, since 2×1051409² = 2210921770562, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1051459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 525704 + 525705.

It is an arithmetic number, because the mean of its divisors is an integer number (525705).

2^1051409 is an apocalyptic number.

It is an amenable number.

1051409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051409 is an equidigital number, since it uses as much as digits as its factorization.

1051409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 180, while the sum is 20.

The square root of 1051409 is about 1025.3823677048. The cubic root of 1051409 is about 101.6850789311.

The spelling of 1051409 in words is "one million, fifty-one thousand, four hundred nine".