290482561 has 4 divisors (see below), whose sum is σ = 293746500. Its totient is φ = 287218624.

The previous prime is 290482529. The next prime is 290482567. The reversal of 290482561 is 165284092.

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 118374400 + 172108161 = 10880^2 + 13119^2 .

It is a cyclic number.

It is not a de Polignac number, because 290482561 - 2⁵ = 290482529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 290482561.

It is not an unprimeable number, because it can be changed into a prime (290482567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631836 + ... + 1632013.

It is an arithmetic number, because the mean of its divisors is an integer number (73436625).

Almost surely, 2^290482561 is an apocalyptic number.

It is an amenable number.

290482561 is a deficient number, since it is larger than the sum of its proper divisors (3263939).

290482561 is an equidigital number, since it uses as much as digits as its factorization.

290482561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263938.

The product of its (nonzero) digits is 34560, while the sum is 37.

The square root of 290482561 is about 17043.5489555433. The cubic root of 290482561 is about 662.2775318537.

The spelling of 290482561 in words is "two hundred ninety million, four hundred eighty-two thousand, five hundred sixty-one".