52445665451 has 2 divisors, whose sum is σ = 52445665452. Its totient is φ = 52445665450.

The previous prime is 52445665381. The next prime is 52445665463. The reversal of 52445665451 is 15456654425.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52445665451 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 52445665396 and 52445665405.

It is not a weakly prime, because it can be changed into another prime (52447665451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26222832725 + 26222832726.

It is an arithmetic number, because the mean of its divisors is an integer number (26222832726).

Almost surely, 2^52445665451 is an apocalyptic number.

52445665451 is a deficient number, since it is larger than the sum of its proper divisors (1).

52445665451 is an equidigital number, since it uses as much as digits as its factorization.

52445665451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2880000, while the sum is 47.

The spelling of 52445665451 in words is "fifty-two billion, four hundred forty-five million, six hundred sixty-five thousand, four hundred fifty-one".