49663857 has 4 divisors (see below), whose sum is σ = 66218480. Its totient is φ = 33109236.

The previous prime is 49663847. The next prime is 49663883. The reversal of 49663857 is 75836694.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 49663857 - 2¹² = 49659761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49663847) 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 in 3 ways as a sum of consecutive naturals, for example, 8277307 + ... + 8277312.

It is an arithmetic number, because the mean of its divisors is an integer number (16554620).

Almost surely, 2^49663857 is an apocalyptic number.

It is an amenable number.

49663857 is a deficient number, since it is larger than the sum of its proper divisors (16554623).

49663857 is a wasteful number, since it uses less digits than its factorization.

49663857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16554622.

The product of its digits is 1088640, while the sum is 48.

The square root of 49663857 is about 7047.2588287929. The cubic root of 49663857 is about 367.5757185829.

The spelling of 49663857 in words is "forty-nine million, six hundred sixty-three thousand, eight hundred fifty-seven".