5405509 has 2 divisors, whose sum is σ = 5405510. Its totient is φ = 5405508.

The previous prime is 5405503. The next prime is 5405527. The reversal of 5405509 is 9055045.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5189284 + 216225 = 2278^2 + 465^2 .

It is a cyclic number.

It is not a de Polignac number, because 5405509 - 2⁷ = 5405381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5405503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2702754 + 2702755.

It is an arithmetic number, because the mean of its divisors is an integer number (2702755).

Almost surely, 2^5405509 is an apocalyptic number.

It is an amenable number.

5405509 is a deficient number, since it is larger than the sum of its proper divisors (1).

5405509 is an equidigital number, since it uses as much as digits as its factorization.

5405509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 5405509 is about 2324.9750536296. The cubic root of 5405509 is about 175.5007048075.

The spelling of 5405509 in words is "five million, four hundred five thousand, five hundred nine".