220553551 has 2 divisors, whose sum is σ = 220553552. Its totient is φ = 220553550.

The previous prime is 220553549. The next prime is 220553569. The reversal of 220553551 is 155355022.

220553551 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220553551 - 2¹ = 220553549 is a prime.

Together with 220553549, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220553521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110276775 + 110276776.

It is an arithmetic number, because the mean of its divisors is an integer number (110276776).

Almost surely, 2^220553551 is an apocalyptic number.

220553551 is a deficient number, since it is larger than the sum of its proper divisors (1).

220553551 is an equidigital number, since it uses as much as digits as its factorization.

220553551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7500, while the sum is 28.

The square root of 220553551 is about 14851.0454514152. The cubic root of 220553551 is about 604.1869651671.

The spelling of 220553551 in words is "two hundred twenty million, five hundred fifty-three thousand, five hundred fifty-one".