407540545 has 8 divisors (see below), whose sum is σ = 489643560. Its totient is φ = 325635840.

The previous prime is 407540543. The next prime is 407540561. The reversal of 407540545 is 545045704.

It can be written as a sum of positive squares in 4 ways, for example, as 139334416 + 268206129 = 11804^2 + 16377^2 .

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

It is not a de Polignac number, because 407540545 - 2¹ = 407540543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 407540545.

It is not an unprimeable number, because it can be changed into a prime (407540543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45016 + ... + 53305.

It is an arithmetic number, because the mean of its divisors is an integer number (61205445).

Almost surely, 2^407540545 is an apocalyptic number.

It is an amenable number.

407540545 is a deficient number, since it is larger than the sum of its proper divisors (82103015).

407540545 is an equidigital number, since it uses as much as digits as its factorization.

407540545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99155.

The product of its (nonzero) digits is 56000, while the sum is 34.

The square root of 407540545 is about 20187.6334670511. The cubic root of 407540545 is about 741.4074413402.

The spelling of 407540545 in words is "four hundred seven million, five hundred forty thousand, five hundred forty-five".