432218561 has 2 divisors, whose sum is σ = 432218562. Its totient is φ = 432218560.

The previous prime is 432218543. The next prime is 432218573. The reversal of 432218561 is 165812234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 296356225 + 135862336 = 17215^2 + 11656^2 .

It is a cyclic number.

It is not a de Polignac number, because 432218561 - 2²² = 428024257 is a prime.

It is not a weakly prime, because it can be changed into another prime (432218531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 216109280 + 216109281.

It is an arithmetic number, because the mean of its divisors is an integer number (216109281).

Almost surely, 2^432218561 is an apocalyptic number.

It is an amenable number.

432218561 is a deficient number, since it is larger than the sum of its proper divisors (1).

432218561 is an equidigital number, since it uses as much as digits as its factorization.

432218561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 32.

The square root of 432218561 is about 20789.8667864900. The cubic root of 432218561 is about 756.0800943714.

The spelling of 432218561 in words is "four hundred thirty-two million, two hundred eighteen thousand, five hundred sixty-one".