47761997 has 2 divisors, whose sum is σ = 47761998. Its totient is φ = 47761996.

The previous prime is 47761981. The next prime is 47762017. The reversal of 47761997 is 79916774.

It is a happy number.

47761997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39112516 + 8649481 = 6254^2 + 2941^2 .

It is a cyclic number.

It is not a de Polignac number, because 47761997 - 2⁴ = 47761981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47761897) 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 as a sum of consecutive naturals, namely, 23880998 + 23880999.

It is an arithmetic number, because the mean of its divisors is an integer number (23880999).

Almost surely, 2^47761997 is an apocalyptic number.

It is an amenable number.

47761997 is a deficient number, since it is larger than the sum of its proper divisors (1).

47761997 is an equidigital number, since it uses as much as digits as its factorization.

47761997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 666792, while the sum is 50.

The square root of 47761997 is about 6911.0054984785. The cubic root of 47761997 is about 362.8224561628.

The spelling of 47761997 in words is "forty-seven million, seven hundred sixty-one thousand, nine hundred ninety-seven".