353401561 has 2 divisors, whose sum is σ = 353401562. Its totient is φ = 353401560.

The previous prime is 353401553. The next prime is 353401567. The reversal of 353401561 is 165104353.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 326163600 + 27237961 = 18060^2 + 5219^2 .

It is an emirp because it is prime and its reverse (165104353) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 353401561 - 2³ = 353401553 is a prime.

It is not a weakly prime, because it can be changed into another prime (353401567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176700780 + 176700781.

It is an arithmetic number, because the mean of its divisors is an integer number (176700781).

Almost surely, 2^353401561 is an apocalyptic number.

It is an amenable number.

353401561 is a deficient number, since it is larger than the sum of its proper divisors (1).

353401561 is an equidigital number, since it uses as much as digits as its factorization.

353401561 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 353401561 is about 18798.9776583728. The cubic root of 353401561 is about 707.0055469650.

The spelling of 353401561 in words is "three hundred fifty-three million, four hundred one thousand, five hundred sixty-one".