47912261 has 2 divisors, whose sum is σ = 47912262. Its totient is φ = 47912260.

The previous prime is 47912257. The next prime is 47912297. The reversal of 47912261 is 16221974.

47912261 = 4894² + 4895².

It is a happy number.

47912261 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., 23961025 + 23951236 = 4895^2 + 4894^2 .

It is a cyclic number.

It is not a de Polignac number, because 47912261 - 2² = 47912257 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p_2883236 and since 47912261 and 2883236 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47912561) 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, 23956130 + 23956131.

It is an arithmetic number, because the mean of its divisors is an integer number (23956131).

Almost surely, 2^47912261 is an apocalyptic number.

47912261 is the 4895-th centered square number.

It is an amenable number.

47912261 is a deficient number, since it is larger than the sum of its proper divisors (1).

47912261 is an equidigital number, since it uses as much as digits as its factorization.

47912261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 32.

The square root of 47912261 is about 6921.8683171525. The cubic root of 47912261 is about 363.2025496993.

The spelling of 47912261 in words is "forty-seven million, nine hundred twelve thousand, two hundred sixty-one".