55505541 has 16 divisors (see below), whose sum is σ = 91086464. Its totient is φ = 29277504.

The previous prime is 55505539. The next prime is 55505557. The reversal of 55505541 is 14550555.

It is not a de Polignac number, because 55505541 - 2¹ = 55505539 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 55505499 and 55505508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55505521) 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, 101386 + ... + 101931.

It is an arithmetic number, because the mean of its divisors is an integer number (5692904).

Almost surely, 2^55505541 is an apocalyptic number.

It is an amenable number.

55505541 is a deficient number, since it is larger than the sum of its proper divisors (35580923).

55505541 is a wasteful number, since it uses less digits than its factorization.

55505541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203340.

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 55505541 is about 7450.2040911642. The cubic root of 55505541 is about 381.4568750577.

It can be divided in two parts, 5550554 and 1, that added together give a palindrome (5550555).

The spelling of 55505541 in words is "fifty-five million, five hundred five thousand, five hundred forty-one".