2645364251 has 4 divisors (see below), whose sum is σ = 2760380112. Its totient is φ = 2530348392.

The previous prime is 2645364229. The next prime is 2645364263. The reversal of 2645364251 is 1524635462.

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 2645364251 - 2⁶ = 2645364187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2645364451) by changing a digit.

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, 57507896 + ... + 57507941.

It is an arithmetic number, because the mean of its divisors is an integer number (690095028).

Almost surely, 2^2645364251 is an apocalyptic number.

2645364251 is a deficient number, since it is larger than the sum of its proper divisors (115015861).

2645364251 is a wasteful number, since it uses less digits than its factorization.

2645364251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115015860.

The product of its digits is 172800, while the sum is 38.

The square root of 2645364251 is about 51433.1046214401. The cubic root of 2645364251 is about 1383.0201047361.

The spelling of 2645364251 in words is "two billion, six hundred forty-five million, three hundred sixty-four thousand, two hundred fifty-one".