47771197 has 2 divisors, whose sum is σ = 47771198. Its totient is φ = 47771196.

The previous prime is 47771153. The next prime is 47771203. The reversal of 47771197 is 79117774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46977316 + 793881 = 6854^2 + 891^2 .

It is a cyclic number.

It is not a de Polignac number, because 47771197 - 2¹¹ = 47769149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47771147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23885598 + 23885599.

It is an arithmetic number, because the mean of its divisors is an integer number (23885599).

Almost surely, 2^47771197 is an apocalyptic number.

It is an amenable number.

47771197 is a deficient number, since it is larger than the sum of its proper divisors (1).

47771197 is an equidigital number, since it uses as much as digits as its factorization.

47771197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86436, while the sum is 43.

The square root of 47771197 is about 6911.6710714559. The cubic root of 47771197 is about 362.8457505007.

The spelling of 47771197 in words is "forty-seven million, seven hundred seventy-one thousand, one hundred ninety-seven".