401360521 has 4 divisors (see below), whose sum is σ = 411149844. Its totient is φ = 391571200.

The previous prime is 401360501. The next prime is 401360593. The reversal of 401360521 is 125063104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 106894921 + 294465600 = 10339^2 + 17160^2 .

It is a cyclic number.

It is not a de Polignac number, because 401360521 - 2¹⁵ = 401327753 is a prime.

It is a super-2 number, since 2×401360521² = 322180535634782882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401360492 and 401360501.

It is not an unprimeable number, because it can be changed into a prime (401360501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4894600 + ... + 4894681.

It is an arithmetic number, because the mean of its divisors is an integer number (102787461).

Almost surely, 2^401360521 is an apocalyptic number.

401360521 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

401360521 is a deficient number, since it is larger than the sum of its proper divisors (9789323).

401360521 is an equidigital number, since it uses as much as digits as its factorization.

401360521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9789322.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 401360521 is about 20033.9841519354. The cubic root of 401360521 is about 737.6407214381.

The spelling of 401360521 in words is "four hundred one million, three hundred sixty thousand, five hundred twenty-one".