354626561 has 2 divisors, whose sum is σ = 354626562. Its totient is φ = 354626560.

The previous prime is 354626533. The next prime is 354626593. The reversal of 354626561 is 165626453.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245110336 + 109516225 = 15656^2 + 10465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-354626561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (354626501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177313280 + 177313281.

It is an arithmetic number, because the mean of its divisors is an integer number (177313281).

Almost surely, 2^354626561 is an apocalyptic number.

It is an amenable number.

354626561 is a deficient number, since it is larger than the sum of its proper divisors (1).

354626561 is an equidigital number, since it uses as much as digits as its factorization.

354626561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129600, while the sum is 38.

The square root of 354626561 is about 18831.5310317563. The cubic root of 354626561 is about 707.8215054571.

The spelling of 354626561 in words is "three hundred fifty-four million, six hundred twenty-six thousand, five hundred sixty-one".