55140441 has 8 divisors (see below), whose sum is σ = 73989504. Its totient is φ = 36525840.

The previous prime is 55140439. The next prime is 55140457. The reversal of 55140441 is 14404155.

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 55140441 - 2¹ = 55140439 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55140431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58065 + ... + 59006.

It is an arithmetic number, because the mean of its divisors is an integer number (9248688).

Almost surely, 2^55140441 is an apocalyptic number.

It is an amenable number.

55140441 is a deficient number, since it is larger than the sum of its proper divisors (18849063).

55140441 is a wasteful number, since it uses less digits than its factorization.

55140441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117231.

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

The square root of 55140441 is about 7425.6609806804. The cubic root of 55140441 is about 380.6186621338.

Adding to 55140441 its reverse (14404155), we get a palindrome (69544596).

The spelling of 55140441 in words is "fifty-five million, one hundred forty thousand, four hundred forty-one".