290022361 has 2 divisors, whose sum is σ = 290022362. Its totient is φ = 290022360.

The previous prime is 290022331. The next prime is 290022367. The reversal of 290022361 is 163220092.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 258212761 + 31809600 = 16069^2 + 5640^2 .

It is a cyclic number.

It is not a de Polignac number, because 290022361 - 2¹⁷ = 289891289 is a prime.

It is a super-2 number, since 2×290022361² = 168225939760028642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (290022367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145011180 + 145011181.

It is an arithmetic number, because the mean of its divisors is an integer number (145011181).

Almost surely, 2^290022361 is an apocalyptic number.

It is an amenable number.

290022361 is a deficient number, since it is larger than the sum of its proper divisors (1).

290022361 is an equidigital number, since it uses as much as digits as its factorization.

290022361 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 290022361 is about 17030.0428948373. The cubic root of 290022361 is about 661.9276069893.

The spelling of 290022361 in words is "two hundred ninety million, twenty-two thousand, three hundred sixty-one".