55005005001 has 4 divisors (see below), whose sum is σ = 73340006672. Its totient is φ = 36670003332.

The previous prime is 55005004991. The next prime is 55005005017. The reversal of 55005005001 is 10050050055.

55005005001 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 not a de Polignac number, because 55005005001 - 2⁶ = 55005004937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55005005101) 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, 9167500831 + ... + 9167500836.

It is an arithmetic number, because the mean of its divisors is an integer number (18335001668).

Almost surely, 2^55005005001 is an apocalyptic number.

It is an amenable number.

55005005001 is a deficient number, since it is larger than the sum of its proper divisors (18335001671).

55005005001 is a wasteful number, since it uses less digits than its factorization.

55005005001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18335001670.

The product of its (nonzero) digits is 625, while the sum is 21.

Adding to 55005005001 its reverse (10050050055), we get a palindrome (65055055056).

The spelling of 55005005001 in words is "fifty-five billion, five million, five thousand, one".