47002661 has 2 divisors, whose sum is σ = 47002662. Its totient is φ = 47002660.

The previous prime is 47002643. The next prime is 47002663. The reversal of 47002661 is 16620074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33570436 + 13432225 = 5794^2 + 3665^2 .

It is a cyclic number.

It is not a de Polignac number, because 47002661 - 2²² = 42808357 is a prime.

It is a Sophie Germain prime.

Together with 47002663, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47002661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47002663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23501330 + 23501331.

It is an arithmetic number, because the mean of its divisors is an integer number (23501331).

Almost surely, 2^47002661 is an apocalyptic number.

It is an amenable number.

47002661 is a deficient number, since it is larger than the sum of its proper divisors (1).

47002661 is an equidigital number, since it uses as much as digits as its factorization.

47002661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 47002661 is about 6855.8486710253. The cubic root of 47002661 is about 360.8894185848.

The spelling of 47002661 in words is "forty-seven million, two thousand, six hundred sixty-one".