55315605 has 8 divisors (see below), whose sum is σ = 88504992.
Its totient is φ = 29501648.
The previous prime is 55315597. The next prime is 55315609. The reversal of 55315605 is 50651355.
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 55315605 - 23 = 55315597 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (55315609) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1843839 + ... + 1843868.
It is an arithmetic number, because the mean of its divisors is an integer number (11063124).
Almost surely, 255315605 is an apocalyptic number.
It is an amenable number.
55315605 is a deficient number, since it is larger than the sum of its proper divisors (33189387).
55315605 is a wasteful number, since it uses less digits than its factorization.
55315605 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3687715.
The product of its (nonzero) digits is 11250, while the sum is 30.
The square root of 55315605 is about 7437.4461342587.
The cubic root of 55315605 is about 381.0212717438.
The spelling of 55315605 in words is "fifty-five million, three hundred fifteen thousand, six hundred five".