555466409 has 2 divisors, whose sum is σ = 555466410. Its totient is φ = 555466408.

The previous prime is 555466393. The next prime is 555466423. The reversal of 555466409 is 904664555.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 507510784 + 47955625 = 22528^2 + 6925^2 .

It is a cyclic number.

It is not a de Polignac number, because 555466409 - 2⁴ = 555466393 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 555466409.

It is not a weakly prime, because it can be changed into another prime (555466489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 277733204 + 277733205.

It is an arithmetic number, because the mean of its divisors is an integer number (277733205).

Almost surely, 2^555466409 is an apocalyptic number.

It is an amenable number.

555466409 is a deficient number, since it is larger than the sum of its proper divisors (1).

555466409 is an equidigital number, since it uses as much as digits as its factorization.

555466409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648000, while the sum is 44.

The square root of 555466409 is about 23568.3348796643. The cubic root of 555466409 is about 822.0267182290.

The spelling of 555466409 in words is "five hundred fifty-five million, four hundred sixty-six thousand, four hundred nine".