55255609 has 8 divisors (see below), whose sum is σ = 57300992. Its totient is φ = 53226720.

The previous prime is 55255601. The next prime is 55255621. The reversal of 55255609 is 90655255.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55255609 - 2³ = 55255601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55255601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2917 + ... + 10909.

It is an arithmetic number, because the mean of its divisors is an integer number (7162624).

Almost surely, 2^55255609 is an apocalyptic number.

It is an amenable number.

55255609 is a deficient number, since it is larger than the sum of its proper divisors (2045383).

55255609 is a wasteful number, since it uses less digits than its factorization.

55255609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8247.

The product of its (nonzero) digits is 67500, while the sum is 37.

The square root of 55255609 is about 7433.4116662539. The cubic root of 55255609 is about 380.8834684249.

The spelling of 55255609 in words is "fifty-five million, two hundred fifty-five thousand, six hundred nine".