2145310051 has 4 divisors (see below), whose sum is σ = 2177329672. Its totient is φ = 2113290432.

The previous prime is 2145310043. The next prime is 2145310093. The reversal of 2145310051 is 1500135412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2145310051 - 2³ = 2145310043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145310021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16009710 + ... + 16009843.

It is an arithmetic number, because the mean of its divisors is an integer number (544332418).

Almost surely, 2^2145310051 is an apocalyptic number.

2145310051 is a deficient number, since it is larger than the sum of its proper divisors (32019621).

2145310051 is an equidigital number, since it uses as much as digits as its factorization.

2145310051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32019620.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 2145310051 is about 46317.4918470333. The cubic root of 2145310051 is about 1289.7237256642.

Adding to 2145310051 its reverse (1500135412), we get a palindrome (3645445463).

The spelling of 2145310051 in words is "two billion, one hundred forty-five million, three hundred ten thousand, fifty-one".