49049857 has 4 divisors (see below), whose sum is σ = 49975380. Its totient is φ = 48124336.

The previous prime is 49049831. The next prime is 49049863. The reversal of 49049857 is 75894094.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45212176 + 3837681 = 6724^2 + 1959^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49049857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49049867) by changing a digit.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 462682 + ... + 462787.

It is an arithmetic number, because the mean of its divisors is an integer number (12493845).

Almost surely, 2^49049857 is an apocalyptic number.

It is an amenable number.

49049857 is a deficient number, since it is larger than the sum of its proper divisors (925523).

49049857 is an equidigital number, since it uses as much as digits as its factorization.

49049857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 925522.

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

The square root of 49049857 is about 7003.5603088715. The cubic root of 49049857 is about 366.0546391398.

The spelling of 49049857 in words is "forty-nine million, forty-nine thousand, eight hundred fifty-seven".