2155447703 has 2 divisors, whose sum is σ = 2155447704. Its totient is φ = 2155447702.

The previous prime is 2155447681. The next prime is 2155447717. The reversal of 2155447703 is 3077445512.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2155447703 - 2¹² = 2155443607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2155447733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1077723851 + 1077723852.

It is an arithmetic number, because the mean of its divisors is an integer number (1077723852).

Almost surely, 2^2155447703 is an apocalyptic number.

2155447703 is a deficient number, since it is larger than the sum of its proper divisors (1).

2155447703 is an equidigital number, since it uses as much as digits as its factorization.

2155447703 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 117600, while the sum is 38.

The square root of 2155447703 is about 46426.7994050850. The cubic root of 2155447703 is about 1291.7520617359.

The spelling of 2155447703 in words is "two billion, one hundred fifty-five million, four hundred forty-seven thousand, seven hundred three".