1004555504551 has 2 divisors, whose sum is σ = 1004555504552. Its totient is φ = 1004555504550.

The previous prime is 1004555504521. The next prime is 1004555504567. The reversal of 1004555504551 is 1554055554001.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1004555504551 - 2⁷ = 1004555504423 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1004555504521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 502277752275 + 502277752276.

It is an arithmetic number, because the mean of its divisors is an integer number (502277752276).

Almost surely, 2^{1004555504551} is an apocalyptic number.

1004555504551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1004555504551 is an equidigital number, since it uses as much as digits as its factorization.

1004555504551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 250000, while the sum is 40.

It can be divided in two parts, 1004 and 555504551, that added together give a palindrome (555505555).

The spelling of 1004555504551 in words is "one trillion, four billion, five hundred fifty-five million, five hundred four thousand, five hundred fifty-one".