5155609 has 4 divisors (see below), whose sum is σ = 5182516. Its totient is φ = 5128704.

The previous prime is 5155603. The next prime is 5155639. The reversal of 5155609 is 9065515.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3504384 + 1651225 = 1872^2 + 1285^2 .

It is a cyclic number.

It is not a de Polignac number, because 5155609 - 2⁷ = 5155481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5155603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13164 + ... + 13549.

It is an arithmetic number, because the mean of its divisors is an integer number (1295629).

Almost surely, 2^5155609 is an apocalyptic number.

It is an amenable number.

5155609 is a deficient number, since it is larger than the sum of its proper divisors (26907).

5155609 is a wasteful number, since it uses less digits than its factorization.

5155609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26906.

The product of its (nonzero) digits is 6750, while the sum is 31.

The square root of 5155609 is about 2270.5966176316. The cubic root of 5155609 is about 172.7534215343.

The spelling of 5155609 in words is "five million, one hundred fifty-five thousand, six hundred nine".