2451211345 has 48 divisors (see below), whose sum is σ = 3366538560. Its totient is φ = 1710656640.

The previous prime is 2451211331. The next prime is 2451211349. The reversal of 2451211345 is 5431121542.

It is not a de Polignac number, because 2451211345 - 2¹¹ = 2451209297 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2451211349) 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 47 ways as a sum of consecutive naturals, for example, 1534087 + ... + 1535683.

It is an arithmetic number, because the mean of its divisors is an integer number (70136220).

Almost surely, 2^2451211345 is an apocalyptic number.

It is an amenable number.

2451211345 is a deficient number, since it is larger than the sum of its proper divisors (915327215).

2451211345 is a wasteful number, since it uses less digits than its factorization.

2451211345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726 (or 1715 counting only the distinct ones).

The product of its digits is 4800, while the sum is 28.

The square root of 2451211345 is about 49509.7096032687. The cubic root of 2451211345 is about 1348.3218920417.

Adding to 2451211345 its reverse (5431121542), we get a palindrome (7882332887).

The spelling of 2451211345 in words is "two billion, four hundred fifty-one million, two hundred eleven thousand, three hundred forty-five".