55120017 has 8 divisors (see below), whose sum is σ = 73987200. Its totient is φ = 36499760.

The previous prime is 55120003. The next prime is 55120061. The reversal of 55120017 is 71002155.

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 55120017 - 2¹⁹ = 54595729 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55119975 and 55120002.

It is not an unprimeable number, because it can be changed into a prime (55125017) 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, 61209 + ... + 62102.

It is an arithmetic number, because the mean of its divisors is an integer number (9248400).

Almost surely, 2^55120017 is an apocalyptic number.

It is an amenable number.

55120017 is a deficient number, since it is larger than the sum of its proper divisors (18867183).

55120017 is a wasteful number, since it uses less digits than its factorization.

55120017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123463.

The product of its (nonzero) digits is 350, while the sum is 21.

The square root of 55120017 is about 7424.2856221996. The cubic root of 55120017 is about 380.5716626575.

The spelling of 55120017 in words is "fifty-five million, one hundred twenty thousand, seventeen".