401022563 has 2 divisors, whose sum is σ = 401022564. Its totient is φ = 401022562.

The previous prime is 401022533. The next prime is 401022577. The reversal of 401022563 is 365220104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401022563 - 2⁶ = 401022499 is a prime.

It is not a weakly prime, because it can be changed into another prime (401022533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200511281 + 200511282.

It is an arithmetic number, because the mean of its divisors is an integer number (200511282).

Almost surely, 2^401022563 is an apocalyptic number.

401022563 is a deficient number, since it is larger than the sum of its proper divisors (1).

401022563 is an equidigital number, since it uses as much as digits as its factorization.

401022563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 401022563 is about 20025.5477578018. The cubic root of 401022563 is about 737.4336245157.

Adding to 401022563 its reverse (365220104), we get a palindrome (766242667).

The spelling of 401022563 in words is "four hundred one million, twenty-two thousand, five hundred sixty-three".