290470561 has 2 divisors, whose sum is σ = 290470562. Its totient is φ = 290470560.

The previous prime is 290470541. The next prime is 290470603. The reversal of 290470561 is 165074092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245110336 + 45360225 = 15656^2 + 6735^2 .

It is a cyclic number.

It is not a de Polignac number, because 290470561 - 2²¹ = 288373409 is a prime.

It is not a weakly prime, because it can be changed into another prime (290470541) 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 as a sum of consecutive naturals, namely, 145235280 + 145235281.

It is an arithmetic number, because the mean of its divisors is an integer number (145235281).

Almost surely, 2^290470561 is an apocalyptic number.

It is an amenable number.

290470561 is a deficient number, since it is larger than the sum of its proper divisors (1).

290470561 is an equidigital number, since it uses as much as digits as its factorization.

290470561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 290470561 is about 17043.1969125514. The cubic root of 290470561 is about 662.2684120408.

The spelling of 290470561 in words is "two hundred ninety million, four hundred seventy thousand, five hundred sixty-one".