49891451 has 2 divisors, whose sum is σ = 49891452. Its totient is φ = 49891450.

The previous prime is 49891433. The next prime is 49891453. The reversal of 49891451 is 15419894.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49891451 is a prime.

Together with 49891453, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 49891399 and 49891408.

It is not a weakly prime, because it can be changed into another prime (49891453) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24945725 + 24945726.

It is an arithmetic number, because the mean of its divisors is an integer number (24945726).

Almost surely, 2^49891451 is an apocalyptic number.

49891451 is a deficient number, since it is larger than the sum of its proper divisors (1).

49891451 is an equidigital number, since it uses as much as digits as its factorization.

49891451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 41.

The square root of 49891451 is about 7063.3880680591. The cubic root of 49891451 is about 368.1363580808.

The spelling of 49891451 in words is "forty-nine million, eight hundred ninety-one thousand, four hundred fifty-one".