49518451 has 2 divisors, whose sum is σ = 49518452. Its totient is φ = 49518450.

The previous prime is 49518449. The next prime is 49518463. The reversal of 49518451 is 15481594.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49518451 - 2¹ = 49518449 is a prime.

Together with 49518449, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 49518451.

It is not a weakly prime, because it can be changed into another prime (49518481) 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, 24759225 + 24759226.

It is an arithmetic number, because the mean of its divisors is an integer number (24759226).

Almost surely, 2^49518451 is an apocalyptic number.

49518451 is a deficient number, since it is larger than the sum of its proper divisors (1).

49518451 is an equidigital number, since it uses as much as digits as its factorization.

49518451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28800, while the sum is 37.

The square root of 49518451 is about 7036.9347730386. The cubic root of 49518451 is about 367.2166381259.

The spelling of 49518451 in words is "forty-nine million, five hundred eighteen thousand, four hundred fifty-one".