47131277 has 2 divisors, whose sum is σ = 47131278. Its totient is φ = 47131276.

The previous prime is 47131261. The next prime is 47131289. The reversal of 47131277 is 77213174.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33396841 + 13734436 = 5779^2 + 3706^2 .

It is a cyclic number.

It is not a de Polignac number, because 47131277 - 2⁴ = 47131261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47131207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23565638 + 23565639.

It is an arithmetic number, because the mean of its divisors is an integer number (23565639).

Almost surely, 2^47131277 is an apocalyptic number.

It is an amenable number.

47131277 is a deficient number, since it is larger than the sum of its proper divisors (1).

47131277 is an equidigital number, since it uses as much as digits as its factorization.

47131277 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8232, while the sum is 32.

The square root of 47131277 is about 6865.2222833642. Note that the first 4 decimals coincide. The cubic root of 47131277 is about 361.2182927356.

The spelling of 47131277 in words is "forty-seven million, one hundred thirty-one thousand, two hundred seventy-seven".