220530451 has 2 divisors, whose sum is σ = 220530452. Its totient is φ = 220530450.

The previous prime is 220530421. The next prime is 220530467. The reversal of 220530451 is 154035022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220530451 - 2¹⁷ = 220399379 is a prime.

It is a super-3 number, since 3×220530451³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (220530421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110265225 + 110265226.

It is an arithmetic number, because the mean of its divisors is an integer number (110265226).

Almost surely, 2^220530451 is an apocalyptic number.

220530451 is a deficient number, since it is larger than the sum of its proper divisors (1).

220530451 is an equidigital number, since it uses as much as digits as its factorization.

220530451 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 220530451 is about 14850.2677080247. The cubic root of 220530451 is about 604.1658709610.

Adding to 220530451 its reverse (154035022), we get a palindrome (374565473).

The spelling of 220530451 in words is "two hundred twenty million, five hundred thirty thousand, four hundred fifty-one".