55504001 has 4 divisors (see below), whose sum is σ = 63433152.
Its totient is φ = 47574852.
The previous prime is 55503989. The next prime is 55504019. The reversal of 55504001 is 10040555.
55504001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 55504001 - 222 = 51309697 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (55504051) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (13) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3964565 + ... + 3964578.
It is an arithmetic number, because the mean of its divisors is an integer number (15858288).
Almost surely, 255504001 is an apocalyptic number.
It is an amenable number.
55504001 is a deficient number, since it is larger than the sum of its proper divisors (7929151).
55504001 is an equidigital number, since it uses as much as digits as its factorization.
55504001 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 7929150.
The product of its (nonzero) digits is 500, while the sum is 20.
The square root of 55504001 is about 7450.1007375740.
The cubic root of 55504001 is about 381.4533471875.
Adding to 55504001 its reverse (10040555), we get a palindrome (65544556).
The spelling of 55504001 in words is "fifty-five million, five hundred four thousand, one".