55170017 has 16 divisors (see below), whose sum is σ = 64229760. Its totient is φ = 46413312.

The previous prime is 55170013. The next prime is 55170019. The reversal of 55170017 is 71007155.

It is a cyclic number.

It is not a de Polignac number, because 55170017 - 2² = 55170013 is a prime.

It is a super-5 number, since 5×55170017⁵ (a number of 40 digits) contains 55555 as substring.

It is not an unprimeable number, because it can be changed into a prime (55170013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156113 + ... + 156465.

It is an arithmetic number, because the mean of its divisors is an integer number (4014360).

Almost surely, 2^55170017 is an apocalyptic number.

It is an amenable number.

55170017 is a deficient number, since it is larger than the sum of its proper divisors (9059743).

55170017 is a wasteful number, since it uses less digits than its factorization.

55170017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712.

The product of its (nonzero) digits is 1225, while the sum is 26.

The square root of 55170017 is about 7427.6521862564. The cubic root of 55170017 is about 380.6867015211.

The spelling of 55170017 in words is "fifty-five million, one hundred seventy thousand, seventeen".