55555541 has 4 divisors (see below), whose sum is σ = 58823532. Its totient is φ = 52287552.

The previous prime is 55555531. The next prime is 55555543. The reversal of 55555541 is 14555555.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16443025 + 39112516 = 4055^2 + 6254^2 .

It is a cyclic number.

It is not a de Polignac number, because 55555541 - 2¹⁴ = 55539157 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55555543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1633970 + ... + 1634003.

It is an arithmetic number, because the mean of its divisors is an integer number (14705883).

Almost surely, 2^55555541 is an apocalyptic number.

It is an amenable number.

55555541 is a deficient number, since it is larger than the sum of its proper divisors (3267991).

55555541 is a wasteful number, since it uses less digits than its factorization.

55555541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267990.

The product of its digits is 62500, while the sum is 35.

The square root of 55555541 is about 7453.5589485829. The cubic root of 55555541 is about 381.5713808605.

It can be divided in two parts, 5555554 and 1, that added together give a palindrome (5555555).

The spelling of 55555541 in words is "fifty-five million, five hundred fifty-five thousand, five hundred forty-one".