2252451991 has 2 divisors, whose sum is σ = 2252451992. Its totient is φ = 2252451990.

The previous prime is 2252451989. The next prime is 2252452057. The reversal of 2252451991 is 1991542522.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2252451991 - 2¹ = 2252451989 is a prime.

Together with 2252451989, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2252451191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1126225995 + 1126225996.

It is an arithmetic number, because the mean of its divisors is an integer number (1126225996).

Almost surely, 2^2252451991 is an apocalyptic number.

2252451991 is a deficient number, since it is larger than the sum of its proper divisors (1).

2252451991 is an equidigital number, since it uses as much as digits as its factorization.

2252451991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 40.

The square root of 2252451991 is about 47460.0041192581. The cubic root of 2252451991 is about 1310.8465268390.

The spelling of 2252451991 in words is "two billion, two hundred fifty-two million, four hundred fifty-one thousand, nine hundred ninety-one".