401322545 has 16 divisors (see below), whose sum is σ = 520568832. Its totient is φ = 295254720.

The previous prime is 401322527. The next prime is 401322547. The reversal of 401322545 is 545223104.

It is a happy number.

It is not a de Polignac number, because 401322545 - 2¹⁰ = 401321521 is a prime.

It is a super-2 number, since 2×401322545² = 322119570250554050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401322547) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6224 + ... + 29006.

It is an arithmetic number, because the mean of its divisors is an integer number (32535552).

Almost surely, 2^401322545 is an apocalyptic number.

It is an amenable number.

401322545 is a deficient number, since it is larger than the sum of its proper divisors (119246287).

401322545 is a wasteful number, since it uses less digits than its factorization.

401322545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23072.

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 401322545 is about 20033.0363400060. The cubic root of 401322545 is about 737.6174559647.

Adding to 401322545 its reverse (545223104), we get a palindrome (946545649).

The spelling of 401322545 in words is "four hundred one million, three hundred twenty-two thousand, five hundred forty-five".