2201555651 has 2 divisors, whose sum is σ = 2201555652. Its totient is φ = 2201555650.

The previous prime is 2201555633. The next prime is 2201555687. The reversal of 2201555651 is 1565551022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2201555651 - 2¹⁰ = 2201554627 is a prime.

It is not a weakly prime, because it can be changed into another prime (2201555351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1100777825 + 1100777826.

It is an arithmetic number, because the mean of its divisors is an integer number (1100777826).

Almost surely, 2^2201555651 is an apocalyptic number.

2201555651 is a deficient number, since it is larger than the sum of its proper divisors (1).

2201555651 is an equidigital number, since it uses as much as digits as its factorization.

2201555651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15000, while the sum is 32.

The square root of 2201555651 is about 46920.7379630798. The cubic root of 2201555651 is about 1300.8979301360.

The spelling of 2201555651 in words is "two billion, two hundred one million, five hundred fifty-five thousand, six hundred fifty-one".