345405545 has 12 divisors (see below), whose sum is σ = 426000204. Its totient is φ = 268850880.

The previous prime is 345405521. The next prime is 345405547. The reversal of 345405545 is 545504543.

It can be written as a sum of positive squares in 6 ways, for example, as 95101504 + 250304041 = 9752^2 + 15821^2 .

It is a de Polignac number, because none of the positive numbers 2^k-345405545 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345405547) 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, 18386 + ... + 32075.

It is an arithmetic number, because the mean of its divisors is an integer number (35500017).

Almost surely, 2^345405545 is an apocalyptic number.

It is an amenable number.

345405545 is a deficient number, since it is larger than the sum of its proper divisors (80594659).

345405545 is an equidigital number, since it uses as much as digits as its factorization.

345405545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50540 (or 50503 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 35.

The square root of 345405545 is about 18585.0893191289. The cubic root of 345405545 is about 701.6326144527.

The spelling of 345405545 in words is "three hundred forty-five million, four hundred five thousand, five hundred forty-five".