52451856991 has 2 divisors, whose sum is σ = 52451856992. Its totient is φ = 52451856990.

The previous prime is 52451856949. The next prime is 52451857037. The reversal of 52451856991 is 19965815425.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 52451856991 - 2¹¹ = 52451854943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52451856901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26225928495 + 26225928496.

It is an arithmetic number, because the mean of its divisors is an integer number (26225928496).

Almost surely, 2^52451856991 is an apocalyptic number.

52451856991 is a deficient number, since it is larger than the sum of its proper divisors (1).

52451856991 is an equidigital number, since it uses as much as digits as its factorization.

52451856991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888000, while the sum is 55.

The spelling of 52451856991 in words is "fifty-two billion, four hundred fifty-one million, eight hundred fifty-six thousand, nine hundred ninety-one".