2145504305 has 8 divisors (see below), whose sum is σ = 2942405952. Its totient is φ = 1471202928.

The previous prime is 2145504287. The next prime is 2145504313. The reversal of 2145504305 is 5034055412.

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

It is a cyclic number.

It is not a de Polignac number, because 2145504305 - 2¹² = 2145500209 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30650027 + ... + 30650096.

It is an arithmetic number, because the mean of its divisors is an integer number (367800744).

Almost surely, 2^2145504305 is an apocalyptic number.

It is an amenable number.

2145504305 is a deficient number, since it is larger than the sum of its proper divisors (796901647).

2145504305 is an equidigital number, since it uses as much as digits as its factorization.

2145504305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61300135.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 2145504305 is about 46319.5887827170. The cubic root of 2145504305 is about 1289.7626518840.

Adding to 2145504305 its reverse (5034055412), we get a palindrome (7179559717).

The spelling of 2145504305 in words is "two billion, one hundred forty-five million, five hundred four thousand, three hundred five".