55441603 has 4 divisors (see below), whose sum is σ = 63361840. Its totient is φ = 47521368.

The previous prime is 55441597. The next prime is 55441637. The reversal of 55441603 is 30614455.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55441603 - 2¹⁷ = 55310531 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55441693) 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, 3960108 + ... + 3960121.

It is an arithmetic number, because the mean of its divisors is an integer number (15840460).

Almost surely, 2^55441603 is an apocalyptic number.

55441603 is a deficient number, since it is larger than the sum of its proper divisors (7920237).

55441603 is an equidigital number, since it uses as much as digits as its factorization.

55441603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7920236.

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 55441603 is about 7445.9118313340. The cubic root of 55441603 is about 381.3103493824.

The spelling of 55441603 in words is "fifty-five million, four hundred forty-one thousand, six hundred three".