47812477 has 2 divisors, whose sum is σ = 47812478. Its totient is φ = 47812476.

The previous prime is 47812451. The next prime is 47812481. The reversal of 47812477 is 77421874.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46321636 + 1490841 = 6806^2 + 1221^2 .

It is a cyclic number.

It is not a de Polignac number, because 47812477 - 2¹¹ = 47810429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47812277) 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 as a sum of consecutive naturals, namely, 23906238 + 23906239.

It is an arithmetic number, because the mean of its divisors is an integer number (23906239).

Almost surely, 2^47812477 is an apocalyptic number.

It is an amenable number.

47812477 is a deficient number, since it is larger than the sum of its proper divisors (1).

47812477 is an equidigital number, since it uses as much as digits as its factorization.

47812477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 87808, while the sum is 40.

The square root of 47812477 is about 6914.6566798360. The cubic root of 47812477 is about 362.9502343826.

The spelling of 47812477 in words is "forty-seven million, eight hundred twelve thousand, four hundred seventy-seven".