55005010001 has 4 divisors (see below), whose sum is σ = 55142180004. Its totient is φ = 54867840000.

The previous prime is 55005009953. The next prime is 55005010003. The reversal of 55005010001 is 10001050055.

55005010001 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.

It can be written as a sum of positive squares in 2 ways, for example, as 50505820225 + 4499189776 = 224735^2 + 67076^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55005010001 is a prime.

It is a super-2 number, since 2×55005010001² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55005010003) 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, 68584400 + ... + 68585201.

It is an arithmetic number, because the mean of its divisors is an integer number (13785545001).

Almost surely, 2^55005010001 is an apocalyptic number.

It is an amenable number.

55005010001 is a deficient number, since it is larger than the sum of its proper divisors (137170003).

55005010001 is a wasteful number, since it uses less digits than its factorization.

55005010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137170002.

The product of its (nonzero) digits is 125, while the sum is 17.

Adding to 55005010001 its reverse (10001050055), we get a palindrome (65006060056).

The spelling of 55005010001 in words is "fifty-five billion, five million, ten thousand, one".