405545013 has 12 divisors (see below), whose sum is σ = 620245548. Its totient is φ = 254459520.

The previous prime is 405545009. The next prime is 405545017. The reversal of 405545013 is 310545504.

It is an interprime number because it is at equal distance from previous prime (405545009) and next prime (405545017).

It can be written as a sum of positive squares in 2 ways, for example, as 172738449 + 232806564 = 13143^2 + 15258^2 .

It is not a de Polignac number, because 405545013 - 2² = 405545009 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405545017) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1325158 + ... + 1325463.

It is an arithmetic number, because the mean of its divisors is an integer number (51687129).

Almost surely, 2^405545013 is an apocalyptic number.

It is an amenable number.

405545013 is a deficient number, since it is larger than the sum of its proper divisors (214700535).

405545013 is a wasteful number, since it uses less digits than its factorization.

405545013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650644 (or 2650641 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 405545013 is about 20138.1482018581. The cubic root of 405545013 is about 740.1953544375.

The spelling of 405545013 in words is "four hundred five million, five hundred forty-five thousand, thirteen".