49756681 has 4 divisors (see below), whose sum is σ = 53584132. Its totient is φ = 45929232.

The previous prime is 49756673. The next prime is 49756697. The reversal of 49756681 is 18665794.

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 13756681 + 36000000 = 3709^2 + 6000^2 .

It is a cyclic number.

It is not a de Polignac number, because 49756681 - 2³ = 49756673 is a prime.

It is a super-2 number, since 2×49756681² = 4951454608271522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49756081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1913706 + ... + 1913731.

It is an arithmetic number, because the mean of its divisors is an integer number (13396033).

Almost surely, 2^49756681 is an apocalyptic number.

It is an amenable number.

49756681 is a deficient number, since it is larger than the sum of its proper divisors (3827451).

49756681 is a wasteful number, since it uses less digits than its factorization.

49756681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3827450.

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

The square root of 49756681 is about 7053.8415774668. The cubic root of 49756681 is about 367.8045812839.

The spelling of 49756681 in words is "forty-nine million, seven hundred fifty-six thousand, six hundred eighty-one".