220055451 has 64 divisors (see below), whose sum is σ = 383201280. Its totient is φ = 108984960.

The previous prime is 220055447. The next prime is 220055533. The reversal of 220055451 is 154550022.

It is a happy number.

It is not a de Polignac number, because 220055451 - 2² = 220055447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (220055401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 716640 + ... + 716946.

It is an arithmetic number, because the mean of its divisors is an integer number (5987520).

Almost surely, 2^220055451 is an apocalyptic number.

220055451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

220055451 is a deficient number, since it is larger than the sum of its proper divisors (163145829).

220055451 is a wasteful number, since it uses less digits than its factorization.

220055451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 220055451 is about 14834.2661092485. The cubic root of 220055451 is about 603.7317886906.

The spelling of 220055451 in words is "two hundred twenty million, fifty-five thousand, four hundred fifty-one".