47781077 has 4 divisors (see below), whose sum is σ = 47986380. Its totient is φ = 47575776.

The previous prime is 47781061. The next prime is 47781089. The reversal of 47781077 is 77018774.

47781077 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 22791076 + 24990001 = 4774^2 + 4999^2 .

It is a cyclic number.

It is not a de Polignac number, because 47781077 - 2⁴ = 47781061 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 (47781047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102302 + ... + 102767.

It is an arithmetic number, because the mean of its divisors is an integer number (11996595).

Almost surely, 2^47781077 is an apocalyptic number.

It is an amenable number.

47781077 is a deficient number, since it is larger than the sum of its proper divisors (205303).

47781077 is a wasteful number, since it uses less digits than its factorization.

47781077 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205302.

The product of its (nonzero) digits is 76832, while the sum is 41.

The square root of 47781077 is about 6912.3857675914. The cubic root of 47781077 is about 362.8707632638.

The spelling of 47781077 in words is "forty-seven million, seven hundred eighty-one thousand, seventy-seven".