1045556647 has 2 divisors, whose sum is σ = 1045556648. Its totient is φ = 1045556646.

The previous prime is 1045556581. The next prime is 1045556657. The reversal of 1045556647 is 7466555401.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1045556647 - 2¹⁵ = 1045523879 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1045556657) 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, 522778323 + 522778324.

It is an arithmetic number, because the mean of its divisors is an integer number (522778324).

Almost surely, 2^1045556647 is an apocalyptic number.

1045556647 is a deficient number, since it is larger than the sum of its proper divisors (1).

1045556647 is an equidigital number, since it uses as much as digits as its factorization.

1045556647 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504000, while the sum is 43.

The square root of 1045556647 is about 32335.0683778464. The cubic root of 1045556647 is about 1014.9606129005.

The spelling of 1045556647 in words is "one billion, forty-five million, five hundred fifty-six thousand, six hundred forty-seven".