405134545 has 4 divisors (see below), whose sum is σ = 486161460. Its totient is φ = 324107632.

The previous prime is 405134479. The next prime is 405134557. The reversal of 405134545 is 545431504.

It is a happy number.

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 149646289 + 255488256 = 12233^2 + 15984^2 .

It is a cyclic number.

It is not a de Polignac number, because 405134545 - 2⁷ = 405134417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40513450 + ... + 40513459.

It is an arithmetic number, because the mean of its divisors is an integer number (121540365).

Almost surely, 2^405134545 is an apocalyptic number.

It is an amenable number.

405134545 is a deficient number, since it is larger than the sum of its proper divisors (81026915).

405134545 is an equidigital number, since it uses as much as digits as its factorization.

405134545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81026914.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 405134545 is about 20127.9543173170. The cubic root of 405134545 is about 739.9455432290.

The spelling of 405134545 in words is "four hundred five million, one hundred thirty-four thousand, five hundred forty-five".