2321151545 has 4 divisors (see below), whose sum is σ = 2785381860. Its totient is φ = 1856921232.

The previous prime is 2321151529. The next prime is 2321151563. The reversal of 2321151545 is 5451511232.

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 871902784 + 1449248761 = 29528^2 + 38069^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321151545 - 2⁴ = 2321151529 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232115150 + ... + 232115159.

It is an arithmetic number, because the mean of its divisors is an integer number (696345465).

Almost surely, 2^2321151545 is an apocalyptic number.

It is an amenable number.

2321151545 is a deficient number, since it is larger than the sum of its proper divisors (464230315).

2321151545 is an equidigital number, since it uses as much as digits as its factorization.

2321151545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464230314.

The product of its digits is 6000, while the sum is 29.

The square root of 2321151545 is about 48178.3306580874. The cubic root of 2321151545 is about 1324.0401820650.

Adding to 2321151545 its reverse (5451511232), we get a palindrome (7772662777).

The spelling of 2321151545 in words is "two billion, three hundred twenty-one million, one hundred fifty-one thousand, five hundred forty-five".