401852497 has 2 divisors, whose sum is σ = 401852498. Its totient is φ = 401852496.

The previous prime is 401852483. The next prime is 401852513. The reversal of 401852497 is 794258104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374770881 + 27081616 = 19359^2 + 5204^2 .

It is a cyclic number.

It is not a de Polignac number, because 401852497 - 2⁷ = 401852369 is a prime.

It is a super-2 number, since 2×401852497² = 322970858690270018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401852447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200926248 + 200926249.

It is an arithmetic number, because the mean of its divisors is an integer number (200926249).

Almost surely, 2^401852497 is an apocalyptic number.

It is an amenable number.

401852497 is a deficient number, since it is larger than the sum of its proper divisors (1).

401852497 is an equidigital number, since it uses as much as digits as its factorization.

401852497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 401852497 is about 20046.2589277900. The cubic root of 401852497 is about 737.9419911906.

The spelling of 401852497 in words is "four hundred one million, eight hundred fifty-two thousand, four hundred ninety-seven".