48451391 has 2 divisors, whose sum is σ = 48451392. Its totient is φ = 48451390.

The previous prime is 48451339. The next prime is 48451393. The reversal of 48451391 is 19315484.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 48451391 - 2⁶ = 48451327 is a prime.

It is a Sophie Germain prime.

Together with 48451393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (48451393) 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 as a sum of consecutive naturals, namely, 24225695 + 24225696.

It is an arithmetic number, because the mean of its divisors is an integer number (24225696).

Almost surely, 2^48451391 is an apocalyptic number.

48451391 is a deficient number, since it is larger than the sum of its proper divisors (1).

48451391 is an equidigital number, since it uses as much as digits as its factorization.

48451391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 48451391 is about 6960.7033408988. The cubic root of 48451391 is about 364.5597770148.

The spelling of 48451391 in words is "forty-eight million, four hundred fifty-one thousand, three hundred ninety-one".