55170007 has 4 divisors (see below), whose sum is σ = 55188520. Its totient is φ = 55151496.

The previous prime is 55169999. The next prime is 55170013. The reversal of 55170007 is 70007155.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70007155 = 5 ⋅14001431.

It is a cyclic number.

It is not a de Polignac number, because 55170007 - 2³ = 55169999 is a prime.

It is a super-5 number, since 5×55170007⁵ (a number of 40 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55570007) 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, 3657 + ... + 11122.

It is an arithmetic number, because the mean of its divisors is an integer number (13797130).

Almost surely, 2^55170007 is an apocalyptic number.

55170007 is a deficient number, since it is larger than the sum of its proper divisors (18513).

55170007 is a wasteful number, since it uses less digits than its factorization.

55170007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18512.

The product of its (nonzero) digits is 1225, while the sum is 25.

The square root of 55170007 is about 7427.6515130962. The cubic root of 55170007 is about 380.6866785203.

The spelling of 55170007 in words is "fifty-five million, one hundred seventy thousand, seven".