49657081 has 4 divisors (see below), whose sum is σ = 49990500. Its totient is φ = 49323664.

The previous prime is 49657079. The next prime is 49657093. The reversal of 49657081 is 18075694.

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 7290000 + 42367081 = 2700^2 + 6509^2 .

It is a cyclic number.

It is not a de Polignac number, because 49657081 - 2¹ = 49657079 is a prime.

It is a super-2 number, since 2×49657081² = 4931651386881122, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49657001) 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, 166486 + ... + 166783.

It is an arithmetic number, because the mean of its divisors is an integer number (12497625).

Almost surely, 2^49657081 is an apocalyptic number.

It is an amenable number.

49657081 is a deficient number, since it is larger than the sum of its proper divisors (333419).

49657081 is a wasteful number, since it uses less digits than its factorization.

49657081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333418.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 49657081 is about 7046.7780580915. The cubic root of 49657081 is about 367.5590008160.

The spelling of 49657081 in words is "forty-nine million, six hundred fifty-seven thousand, eighty-one".