55440141 has 8 divisors (see below), whose sum is σ = 76469280. Its totient is φ = 35685552.

The previous prime is 55440139. The next prime is 55440149. The reversal of 55440141 is 14104455.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55440141 - 2¹ = 55440139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55440149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318535 + ... + 318708.

It is an arithmetic number, because the mean of its divisors is an integer number (9558660).

Almost surely, 2^55440141 is an apocalyptic number.

It is an amenable number.

55440141 is a deficient number, since it is larger than the sum of its proper divisors (21029139).

55440141 is a wasteful number, since it uses less digits than its factorization.

55440141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637275.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 55440141 is about 7445.8136560083. The cubic root of 55440141 is about 381.3069976236.

Adding to 55440141 its reverse (14104455), we get a palindrome (69544596).

The spelling of 55440141 in words is "fifty-five million, four hundred forty thousand, one hundred forty-one".