55280641 has 16 divisors (see below), whose sum is σ = 61911360. Its totient is φ = 49008960.

The previous prime is 55280611. The next prime is 55280663. The reversal of 55280641 is 14608255.

It is not a de Polignac number, because 55280641 - 2⁷ = 55280513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55280611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 124566 + ... + 125008.

It is an arithmetic number, because the mean of its divisors is an integer number (3869460).

Almost surely, 2^55280641 is an apocalyptic number.

It is an amenable number.

55280641 is a deficient number, since it is larger than the sum of its proper divisors (6630719).

55280641 is a wasteful number, since it uses less digits than its factorization.

55280641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 55280641 is about 7435.0952246760. The cubic root of 55280641 is about 380.9409759237.

Adding to 55280641 its reverse (14608255), we get a palindrome (69888896).

The spelling of 55280641 in words is "fifty-five million, two hundred eighty thousand, six hundred forty-one".