49890457 has 2 divisors, whose sum is σ = 49890458. Its totient is φ = 49890456.

The previous prime is 49890443. The next prime is 49890487. The reversal of 49890457 is 75409894.

49890457 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39803481 + 10086976 = 6309^2 + 3176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49890457 is a prime.

It is not a weakly prime, because it can be changed into another prime (49890487) 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, 24945228 + 24945229.

It is an arithmetic number, because the mean of its divisors is an integer number (24945229).

Almost surely, 2^49890457 is an apocalyptic number.

It is an amenable number.

49890457 is a deficient number, since it is larger than the sum of its proper divisors (1).

49890457 is an equidigital number, since it uses as much as digits as its factorization.

49890457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 49890457 is about 7063.3177048750. The cubic root of 49890457 is about 368.1339132400.

The spelling of 49890457 in words is "forty-nine million, eight hundred ninety thousand, four hundred fifty-seven".