49511647 has 4 divisors (see below), whose sum is σ = 49644760. Its totient is φ = 49378536.

The previous prime is 49511639. The next prime is 49511653. The reversal of 49511647 is 74611594.

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

It is a cyclic number.

It is not a de Polignac number, because 49511647 - 2³ = 49511639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49511347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65997 + ... + 66742.

It is an arithmetic number, because the mean of its divisors is an integer number (12411190).

Almost surely, 2^49511647 is an apocalyptic number.

49511647 is a deficient number, since it is larger than the sum of its proper divisors (133113).

49511647 is a wasteful number, since it uses less digits than its factorization.

49511647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133112.

The product of its digits is 30240, while the sum is 37.

The square root of 49511647 is about 7036.4513072997. The cubic root of 49511647 is about 367.1998184260.

The spelling of 49511647 in words is "forty-nine million, five hundred eleven thousand, six hundred forty-seven".