490220545 has 4 divisors (see below), whose sum is σ = 588264660. Its totient is φ = 392176432.

The previous prime is 490220543. The next prime is 490220567. The reversal of 490220545 is 545022094.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 363703041 + 126517504 = 19071^2 + 11248^2 .

It is a cyclic number.

It is not a de Polignac number, because 490220545 - 2¹ = 490220543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (490220543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49022050 + ... + 49022059.

It is an arithmetic number, because the mean of its divisors is an integer number (147066165).

Almost surely, 2^490220545 is an apocalyptic number.

It is an amenable number.

490220545 is a deficient number, since it is larger than the sum of its proper divisors (98044115).

490220545 is an equidigital number, since it uses as much as digits as its factorization.

490220545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98044114.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 490220545 is about 22140.9246645211. The cubic root of 490220545 is about 788.4917787306.

The spelling of 490220545 in words is "four hundred ninety million, two hundred twenty thousand, five hundred forty-five".