405560461 has 2 divisors, whose sum is σ = 405560462. Its totient is φ = 405560460.

The previous prime is 405560437. The next prime is 405560471. The reversal of 405560461 is 164065504.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221116900 + 184443561 = 14870^2 + 13581^2 .

It is a cyclic number.

It is not a de Polignac number, because 405560461 - 2⁵ = 405560429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405560401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202780230 + 202780231.

It is an arithmetic number, because the mean of its divisors is an integer number (202780231).

Almost surely, 2^405560461 is an apocalyptic number.

It is an amenable number.

405560461 is a deficient number, since it is larger than the sum of its proper divisors (1).

405560461 is an equidigital number, since it uses as much as digits as its factorization.

405560461 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 31.

The square root of 405560461 is about 20138.5317488639. The cubic root of 405560461 is about 740.2047528127.

It can be divided in two parts, 4055 and 60461, that added together give a square (64516 = 254²).

The spelling of 405560461 in words is "four hundred five million, five hundred sixty thousand, four hundred sixty-one".