5645251 has 2 divisors, whose sum is σ = 5645252. Its totient is φ = 5645250.

The previous prime is 5645243. The next prime is 5645257. The reversal of 5645251 is 1525465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5645251 - 2³ = 5645243 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (5645257) 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 as a sum of consecutive naturals, namely, 2822625 + 2822626.

It is an arithmetic number, because the mean of its divisors is an integer number (2822626).

Almost surely, 2^5645251 is an apocalyptic number.

5645251 is a deficient number, since it is larger than the sum of its proper divisors (1).

5645251 is an equidigital number, since it uses as much as digits as its factorization.

5645251 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6000, while the sum is 28.

The square root of 5645251 is about 2375.9736951406. The cubic root of 5645251 is about 178.0578337511.

The spelling of 5645251 in words is "five million, six hundred forty-five thousand, two hundred fifty-one".