55060005 has 128 divisors (see below), whose sum is σ = 125153280.
Its totient is φ = 19906560.
The previous prime is 55059973. The next prime is 55060021. The reversal of 55060005 is 50006055.
It is not a de Polignac number, because 55060005 - 25 = 55059973 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (21).
It is a Curzon number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 285189 + ... + 285381.
It is an arithmetic number, because the mean of its divisors is an integer number (977760).
Almost surely, 255060005 is an apocalyptic number.
55060005 is a gapful number since it is divisible by the number (55) formed by its first and last digit.
It is an amenable number.
55060005 is an abundant number, since it is smaller than the sum of its proper divisors (70093275).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
55060005 is a wasteful number, since it uses less digits than its factorization.
55060005 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 251.
The product of its (nonzero) digits is 750, while the sum is 21.
The square root of 55060005 is about 7420.2429205519.
The cubic root of 55060005 is about 380.4334965157.
The spelling of 55060005 in words is "fifty-five million, sixty thousand, five".