55145141 has 4 divisors (see below), whose sum is σ = 55303500. Its totient is φ = 54986784.

The previous prime is 55145137. The next prime is 55145183. The reversal of 55145141 is 14154155.

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 49646116 + 5499025 = 7046^2 + 2345^2 .

It is a cyclic number.

It is not a de Polignac number, because 55145141 - 2² = 55145137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55145141.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55145341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78656 + ... + 79353.

It is an arithmetic number, because the mean of its divisors is an integer number (13825875).

Almost surely, 2^55145141 is an apocalyptic number.

It is an amenable number.

55145141 is a deficient number, since it is larger than the sum of its proper divisors (158359).

55145141 is a wasteful number, since it uses less digits than its factorization.

55145141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158358.

The product of its digits is 2000, while the sum is 26.

The square root of 55145141 is about 7425.9774440810. The cubic root of 55145141 is about 380.6294760776.

Adding to 55145141 its reverse (14154155), we get a palindrome (69299296).

The spelling of 55145141 in words is "fifty-five million, one hundred forty-five thousand, one hundred forty-one".