290521106 has 8 divisors (see below), whose sum is σ = 436120524. Its totient is φ = 145147600.

The previous prime is 290521081. The next prime is 290521139. The reversal of 290521106 is 601125092.

It can be written as a sum of positive squares in 2 ways, for example, as 241647025 + 48874081 = 15545^2 + 6991^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53225 + ... + 58428.

Almost surely, 2^290521106 is an apocalyptic number.

290521106 is a deficient number, since it is larger than the sum of its proper divisors (145599418).

290521106 is a wasteful number, since it uses less digits than its factorization.

290521106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112956.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 290521106 is about 17044.6796977825. The cubic root of 290521106 is about 662.3068237538.

Adding to 290521106 its reverse (601125092), we get a palindrome (891646198).

The spelling of 290521106 in words is "two hundred ninety million, five hundred twenty-one thousand, one hundred six".