5537509 has 2 divisors, whose sum is σ = 5537510. Its totient is φ = 5537508.

The previous prime is 5537489. The next prime is 5537533. The reversal of 5537509 is 9057355.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5536609 + 900 = 2353^2 + 30^2 .

It is a cyclic number.

It is not a de Polignac number, because 5537509 - 2⁷ = 5537381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5531509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2768754 + 2768755.

It is an arithmetic number, because the mean of its divisors is an integer number (2768755).

Almost surely, 2^5537509 is an apocalyptic number.

It is an amenable number.

5537509 is a deficient number, since it is larger than the sum of its proper divisors (1).

5537509 is an equidigital number, since it uses as much as digits as its factorization.

5537509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23625, while the sum is 34.

The square root of 5537509 is about 2353.1912374476. The cubic root of 5537509 is about 176.9177802350.

The spelling of 5537509 in words is "five million, five hundred thirty-seven thousand, five hundred nine".