55542141 has 12 divisors (see below), whose sum is σ = 81130140. Its totient is φ = 36611520.

The previous prime is 55542139. The next prime is 55542161. The reversal of 55542141 is 14124555.

It can be written as a sum of positive squares in 2 ways, for example, as 12574116 + 42968025 = 3546^2 + 6555^2 .

It is not a de Polignac number, because 55542141 - 2¹ = 55542139 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55542121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33870 + ... + 35471.

It is an arithmetic number, because the mean of its divisors is an integer number (6760845).

Almost surely, 2^55542141 is an apocalyptic number.

It is an amenable number.

55542141 is a deficient number, since it is larger than the sum of its proper divisors (25587999).

55542141 is a wasteful number, since it uses less digits than its factorization.

55542141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69436 (or 69433 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 55542141 is about 7452.6599949280. The cubic root of 55542141 is about 381.5407000466.

Adding to 55542141 its reverse (14124555), we get a palindrome (69666696).

The spelling of 55542141 in words is "fifty-five million, five hundred forty-two thousand, one hundred forty-one".