2855453581 has 2 divisors, whose sum is σ = 2855453582. Its totient is φ = 2855453580.

The previous prime is 2855453533. The next prime is 2855453609. The reversal of 2855453581 is 1853545582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1854680356 + 1000773225 = 43066^2 + 31635^2 .

It is a cyclic number.

It is not a de Polignac number, because 2855453581 - 2⁷ = 2855453453 is a prime.

It is a super-2 number, since 2×2855453581² = 16307230306491447122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2855493581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1427726790 + 1427726791.

It is an arithmetic number, because the mean of its divisors is an integer number (1427726791).

Almost surely, 2^2855453581 is an apocalyptic number.

It is an amenable number.

2855453581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2855453581 is an equidigital number, since it uses as much as digits as its factorization.

2855453581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960000, while the sum is 46.

The square root of 2855453581 is about 53436.4443147184. Note that the first 3 decimals coincide. The cubic root of 2855453581 is about 1418.7037004407.

The spelling of 2855453581 in words is "two billion, eight hundred fifty-five million, four hundred fifty-three thousand, five hundred eighty-one".