49307857 has 2 divisors, whose sum is σ = 49307858. Its totient is φ = 49307856.

The previous prime is 49307827. The next prime is 49307873. The reversal of 49307857 is 75870394.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47114496 + 2193361 = 6864^2 + 1481^2 .

It is a cyclic number.

It is not a de Polignac number, because 49307857 - 2⁷ = 49307729 is a prime.

It is not a weakly prime, because it can be changed into another prime (49307827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24653928 + 24653929.

It is an arithmetic number, because the mean of its divisors is an integer number (24653929).

Almost surely, 2^49307857 is an apocalyptic number.

It is an amenable number.

49307857 is a deficient number, since it is larger than the sum of its proper divisors (1).

49307857 is an equidigital number, since it uses as much as digits as its factorization.

49307857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 49307857 is about 7021.9553544579. The cubic root of 49307857 is about 366.6953273281.

The spelling of 49307857 in words is "forty-nine million, three hundred seven thousand, eight hundred fifty-seven".