2006553551 has 2 divisors, whose sum is σ = 2006553552. Its totient is φ = 2006553550.

The previous prime is 2006553541. The next prime is 2006553589. The reversal of 2006553551 is 1553556002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2006553551 - 2³⁰ = 932811727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2006553541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003276775 + 1003276776.

It is an arithmetic number, because the mean of its divisors is an integer number (1003276776).

Almost surely, 2^2006553551 is an apocalyptic number.

2006553551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2006553551 is an equidigital number, since it uses as much as digits as its factorization.

2006553551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22500, while the sum is 32.

The square root of 2006553551 is about 44794.5705526909. The cubic root of 2006553551 is about 1261.2957089794.

The spelling of 2006553551 in words is "two billion, six million, five hundred fifty-three thousand, five hundred fifty-one".