455555899 has 2 divisors, whose sum is σ = 455555900. Its totient is φ = 455555898.

The previous prime is 455555873. The next prime is 455555921. The reversal of 455555899 is 998555554.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 455555899 - 2¹¹ = 455553851 is a prime.

It is a super-2 number, since 2×455555899² = 415062354227396402, which contains 22 as substring.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (455355899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227777949 + 227777950.

It is an arithmetic number, because the mean of its divisors is an integer number (227777950).

Almost surely, 2^455555899 is an apocalyptic number.

455555899 is a deficient number, since it is larger than the sum of its proper divisors (1).

455555899 is an equidigital number, since it uses as much as digits as its factorization.

455555899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100000, while the sum is 55.

The square root of 455555899 is about 21343.7555036596. The cubic root of 455555899 is about 769.4502732813.

The spelling of 455555899 in words is "four hundred fifty-five million, five hundred fifty-five thousand, eight hundred ninety-nine".