5545551001 has 2 divisors, whose sum is σ = 5545551002. Its totient is φ = 5545551000.

The previous prime is 5545550993. The next prime is 5545551023. The reversal of 5545551001 is 1001555455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5530153225 + 15397776 = 74365^2 + 3924^2 .

It is a cyclic number.

It is not a de Polignac number, because 5545551001 - 2³ = 5545550993 is a prime.

It is not a weakly prime, because it can be changed into another prime (5545551031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2772775500 + 2772775501.

It is an arithmetic number, because the mean of its divisors is an integer number (2772775501).

Almost surely, 2^5545551001 is an apocalyptic number.

It is an amenable number.

5545551001 is a deficient number, since it is larger than the sum of its proper divisors (1).

5545551001 is an equidigital number, since it uses as much as digits as its factorization.

5545551001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12500, while the sum is 31.

The square root of 5545551001 is about 74468.4564161229. The cubic root of 5545551001 is about 1770.0338339261.

It can be divided in two parts, 554 and 5551001, that added together give a palindrome (5551555).

The spelling of 5545551001 in words is "five billion, five hundred forty-five million, five hundred fifty-one thousand, one".