401275945 has 24 divisors (see below), whose sum is σ = 562416264. Its totient is φ = 274046976.

The previous prime is 401275913. The next prime is 401275967. The reversal of 401275945 is 549572104.

It can be written as a sum of positive squares in 4 ways, for example, as 218566656 + 182709289 = 14784^2 + 13517^2 .

It is not a de Polignac number, because 401275945 - 2⁵ = 401275913 is a prime.

It is a super-2 number, since 2×401275945² = 322044768071286050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 59779 + ... + 66151.

It is an arithmetic number, because the mean of its divisors is an integer number (23434011).

Almost surely, 2^401275945 is an apocalyptic number.

It is an amenable number.

401275945 is a deficient number, since it is larger than the sum of its proper divisors (161140319).

401275945 is a wasteful number, since it uses less digits than its factorization.

401275945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6649 (or 6642 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 401275945 is about 20031.8732274343. The cubic root of 401275945 is about 737.5889051109.

The spelling of 401275945 in words is "four hundred one million, two hundred seventy-five thousand, nine hundred forty-five".