55100505 has 8 divisors (see below), whose sum is σ = 88160832. Its totient is φ = 29386928.

The previous prime is 55100503. The next prime is 55100509. The reversal of 55100505 is 50500155.

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 55100505 - 2¹ = 55100503 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55100503) 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, 1836669 + ... + 1836698.

It is an arithmetic number, because the mean of its divisors is an integer number (11020104).

Almost surely, 2^55100505 is an apocalyptic number.

It is an amenable number.

55100505 is a deficient number, since it is larger than the sum of its proper divisors (33060327).

55100505 is a wasteful number, since it uses less digits than its factorization.

55100505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673375.

The product of its (nonzero) digits is 625, while the sum is 21.

The square root of 55100505 is about 7422.9714400636. The cubic root of 55100505 is about 380.5267510200.

The spelling of 55100505 in words is "fifty-five million, one hundred thousand, five hundred five".