49643157 has 16 divisors (see below), whose sum is σ = 69027840. Its totient is φ = 31695552.

The previous prime is 49643149. The next prime is 49643189. The reversal of 49643157 is 75134694.

It is not a de Polignac number, because 49643157 - 2³ = 49643149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49643107) 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 15 ways as a sum of consecutive naturals, for example, 8803 + ... + 13295.

It is an arithmetic number, because the mean of its divisors is an integer number (4314240).

Almost surely, 2^49643157 is an apocalyptic number.

It is an amenable number.

49643157 is a deficient number, since it is larger than the sum of its proper divisors (19384683).

49643157 is a wasteful number, since it uses less digits than its factorization.

49643157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4652.

The product of its digits is 90720, while the sum is 39.

The square root of 49643157 is about 7045.7900195791. The cubic root of 49643157 is about 367.5246427087.

The spelling of 49643157 in words is "forty-nine million, six hundred forty-three thousand, one hundred fifty-seven".