205361401 has 6 divisors (see below), whose sum is σ = 238889850. Its totient is φ = 176024016.

The previous prime is 205361399. The next prime is 205361407. The reversal of 205361401 is 104163502.

It can be written as a sum of positive squares in only one way, i.e., 130988025 + 74373376 = 11445^2 + 8624^2 .

It is not a de Polignac number, because 205361401 - 2¹ = 205361399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (205361407) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2095476 + ... + 2095573.

It is an arithmetic number, because the mean of its divisors is an integer number (39814975).

Almost surely, 2^205361401 is an apocalyptic number.

It is an amenable number.

205361401 is a deficient number, since it is larger than the sum of its proper divisors (33528449).

205361401 is an equidigital number, since it uses as much as digits as its factorization.

205361401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4191063 (or 4191056 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 205361401 is about 14330.4361761951. The cubic root of 205361401 is about 589.9831470816.

The spelling of 205361401 in words is "two hundred five million, three hundred sixty-one thousand, four hundred one".