1005504555001 has 4 divisors (see below), whose sum is σ = 1005517093492. Its totient is φ = 1005492016512.

The previous prime is 1005504554933. The next prime is 1005504555061. The reversal of 1005504555001 is 1005554055001.

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 66088069776 + 939416485225 = 257076^2 + 969235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1005504555001 - 2¹¹ = 1005504552953 is a prime.

It is a super-2 number, since 2×1005504555001² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1005504555061) 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, 6148176 + ... + 6309601.

It is an arithmetic number, because the mean of its divisors is an integer number (251379273373).

Almost surely, 2^{1005504555001} is an apocalyptic number.

It is an amenable number.

1005504555001 is a deficient number, since it is larger than the sum of its proper divisors (12538491).

1005504555001 is an equidigital number, since it uses as much as digits as its factorization.

1005504555001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12538490.

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

The spelling of 1005504555001 in words is "one trillion, five billion, five hundred four million, five hundred fifty-five thousand, one".