55067609 has 4 divisors (see below), whose sum is σ = 55082880. Its totient is φ = 55052340.

The previous prime is 55067599. The next prime is 55067627. The reversal of 55067609 is 90676055.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55067609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55067699) 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, 1124 + ... + 10554.

It is an arithmetic number, because the mean of its divisors is an integer number (13770720).

Almost surely, 2^55067609 is an apocalyptic number.

It is an amenable number.

55067609 is a deficient number, since it is larger than the sum of its proper divisors (15271).

55067609 is an equidigital number, since it uses as much as digits as its factorization.

55067609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15270.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 55067609 is about 7420.7552850097. The cubic root of 55067609 is about 380.4510088228.

The spelling of 55067609 in words is "fifty-five million, sixty-seven thousand, six hundred nine".