2220454531 has 2 divisors, whose sum is σ = 2220454532. Its totient is φ = 2220454530.

The previous prime is 2220454529. The next prime is 2220454549. The reversal of 2220454531 is 1354540222.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2220454531 - 2¹ = 2220454529 is a prime.

It is a super-2 number, since 2×2220454531² = 9860836648476859922, which contains 22 as substring.

Together with 2220454529, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2220454531.

It is not a weakly prime, because it can be changed into another prime (2220454591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110227265 + 1110227266.

It is an arithmetic number, because the mean of its divisors is an integer number (1110227266).

Almost surely, 2^2220454531 is an apocalyptic number.

2220454531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2220454531 is an equidigital number, since it uses as much as digits as its factorization.

2220454531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 2220454531 is about 47121.6991523014. The cubic root of 2220454531 is about 1304.6097747439.

Adding to 2220454531 its reverse (1354540222), we get a palindrome (3574994753).

It can be divided in two parts, 222045 and 4531, that added together give a square (226576 = 476²).

The spelling of 2220454531 in words is "two billion, two hundred twenty million, four hundred fifty-four thousand, five hundred thirty-one".