550504991801 has 2 divisors, whose sum is σ = 550504991802. Its totient is φ = 550504991800.

The previous prime is 550504991759. The next prime is 550504991831. The reversal of 550504991801 is 108199405055.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315838380025 + 234666611776 = 561995^2 + 484424^2 .

It is a cyclic number.

It is not a de Polignac number, because 550504991801 - 2⁶ = 550504991737 is a prime.

It is not a weakly prime, because it can be changed into another prime (550504991831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 275252495900 + 275252495901.

It is an arithmetic number, because the mean of its divisors is an integer number (275252495901).

Almost surely, 2^550504991801 is an apocalyptic number.

It is an amenable number.

550504991801 is a deficient number, since it is larger than the sum of its proper divisors (1).

550504991801 is an equidigital number, since it uses as much as digits as its factorization.

550504991801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324000, while the sum is 47.

The spelling of 550504991801 in words is "five hundred fifty billion, five hundred four million, nine hundred ninety-one thousand, eight hundred one".