5261009947 has 2 divisors, whose sum is σ = 5261009948. Its totient is φ = 5261009946.

The previous prime is 5261009939. The next prime is 5261009951. The reversal of 5261009947 is 7499001625.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5261009947 - 2³ = 5261009939 is a prime.

It is not a weakly prime, because it can be changed into another prime (5261009927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2630504973 + 2630504974.

It is an arithmetic number, because the mean of its divisors is an integer number (2630504974).

Almost surely, 2^5261009947 is an apocalyptic number.

5261009947 is a deficient number, since it is larger than the sum of its proper divisors (1).

5261009947 is an equidigital number, since it uses as much as digits as its factorization.

5261009947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 5261009947 is about 72532.8197921465. The cubic root of 5261009947 is about 1739.2274223551.

The spelling of 5261009947 in words is "five billion, two hundred sixty-one million, nine thousand, nine hundred forty-seven".