401563507 has 2 divisors, whose sum is σ = 401563508. Its totient is φ = 401563506.

The previous prime is 401563501. The next prime is 401563543. The reversal of 401563507 is 705365104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401563507 - 2²⁷ = 267345779 is a prime.

It is a super-2 number, since 2×401563507² = 322506500308278098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401563501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200781753 + 200781754.

It is an arithmetic number, because the mean of its divisors is an integer number (200781754).

Almost surely, 2^401563507 is an apocalyptic number.

401563507 is a deficient number, since it is larger than the sum of its proper divisors (1).

401563507 is an equidigital number, since it uses as much as digits as its factorization.

401563507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12600, while the sum is 31.

The square root of 401563507 is about 20039.0495533097. The cubic root of 401563507 is about 737.7650531357.

The spelling of 401563507 in words is "four hundred one million, five hundred sixty-three thousand, five hundred seven".