11609537 has 2 divisors, whose sum is σ = 11609538. Its totient is φ = 11609536.

The previous prime is 11609501. The next prime is 11609567. The reversal of 11609537 is 73590611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8620096 + 2989441 = 2936^2 + 1729^2 .

It is an emirp because it is prime and its reverse (73590611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11609537 - 2⁶ = 11609473 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (11609567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5804768 + 5804769.

It is an arithmetic number, because the mean of its divisors is an integer number (5804769).

Almost surely, 2^11609537 is an apocalyptic number.

It is an amenable number.

11609537 is a deficient number, since it is larger than the sum of its proper divisors (1).

11609537 is an equidigital number, since it uses as much as digits as its factorization.

11609537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 11609537 is about 3407.2770653412. The cubic root of 11609537 is about 226.4322593533.

The spelling of 11609537 in words is "eleven million, six hundred nine thousand, five hundred thirty-seven".