554806015921 has 2 divisors, whose sum is σ = 554806015922. Its totient is φ = 554806015920.

The previous prime is 554806015909. The next prime is 554806016033. The reversal of 554806015921 is 129510608455.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 417620967696 + 137185048225 = 646236^2 + 370385^2 .

It is a cyclic number.

It is not a de Polignac number, because 554806015921 - 2¹¹ = 554806013873 is a prime.

It is not a weakly prime, because it can be changed into another prime (554806015021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277403007960 + 277403007961.

It is an arithmetic number, because the mean of its divisors is an integer number (277403007961).

Almost surely, 2^554806015921 is an apocalyptic number.

It is an amenable number.

554806015921 is a deficient number, since it is larger than the sum of its proper divisors (1).

554806015921 is an equidigital number, since it uses as much as digits as its factorization.

554806015921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432000, while the sum is 46.

The spelling of 554806015921 in words is "five hundred fifty-four billion, eight hundred six million, fifteen thousand, nine hundred twenty-one".