401318545 has 8 divisors (see below), whose sum is σ = 482432040. Its totient is φ = 320488320.

The previous prime is 401318509. The next prime is 401318557. The reversal of 401318545 is 545813104.

It can be written as a sum of positive squares in 4 ways, for example, as 45468049 + 355850496 = 6743^2 + 18864^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 401318545 - 2⁷ = 401318417 is a prime.

It is a super-2 number, since 2×401318545² = 322113149121834050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67686 + ... + 73375.

It is an arithmetic number, because the mean of its divisors is an integer number (60304005).

Almost surely, 2^401318545 is an apocalyptic number.

It is an amenable number.

401318545 is a deficient number, since it is larger than the sum of its proper divisors (81113495).

401318545 is a wasteful number, since it uses less digits than its factorization.

401318545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141635.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 401318545 is about 20032.9365046665. The cubic root of 401318545 is about 737.6150053344.

The spelling of 401318545 in words is "four hundred one million, three hundred eighteen thousand, five hundred forty-five".