290413561 has 2 divisors, whose sum is σ = 290413562. Its totient is φ = 290413560.

The previous prime is 290413531. The next prime is 290413579. The reversal of 290413561 is 165314092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 273273961 + 17139600 = 16531^2 + 4140^2 .

It is a cyclic number.

It is not a de Polignac number, because 290413561 - 2⁹ = 290413049 is a prime.

It is not a weakly prime, because it can be changed into another prime (290413531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145206780 + 145206781.

It is an arithmetic number, because the mean of its divisors is an integer number (145206781).

Almost surely, 2^290413561 is an apocalyptic number.

It is an amenable number.

290413561 is a deficient number, since it is larger than the sum of its proper divisors (1).

290413561 is an equidigital number, since it uses as much as digits as its factorization.

290413561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 290413561 is about 17041.5246090249. The cubic root of 290413561 is about 662.2250894991.

The spelling of 290413561 in words is "two hundred ninety million, four hundred thirteen thousand, five hundred sixty-one".