455555551 has 32 divisors (see below), whose sum is σ = 524978496. Its totient is φ = 391680000.

The previous prime is 455555501. The next prime is 455555567. The reversal of 455555551 is 155555554.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 455555551 - 2¹¹ = 455553503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (455555501) 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 in 31 ways as a sum of consecutive naturals, for example, 3325155 + ... + 3325291.

It is an arithmetic number, because the mean of its divisors is an integer number (16405578).

Almost surely, 2^455555551 is an apocalyptic number.

455555551 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

455555551 is a deficient number, since it is larger than the sum of its proper divisors (69422945).

455555551 is a wasteful number, since it uses less digits than its factorization.

455555551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 363.

The product of its digits is 312500, while the sum is 40.

The square root of 455555551 is about 21343.7473513908. The cubic root of 455555551 is about 769.4500773530.

It can be divided in two parts, 4555 and 55551, that added together give a palindrome (60106).

The spelling of 455555551 in words is "four hundred fifty-five million, five hundred fifty-five thousand, five hundred fifty-one".