47506621 has 2 divisors, whose sum is σ = 47506622. Its totient is φ = 47506620.

The previous prime is 47506607. The next prime is 47506681. The reversal of 47506621 is 12660574.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46090521 + 1416100 = 6789^2 + 1190^2 .

It is a cyclic number.

It is not a de Polignac number, because 47506621 - 2¹¹ = 47504573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47506681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23753310 + 23753311.

It is an arithmetic number, because the mean of its divisors is an integer number (23753311).

Almost surely, 2^47506621 is an apocalyptic number.

It is an amenable number.

47506621 is a deficient number, since it is larger than the sum of its proper divisors (1).

47506621 is an equidigital number, since it uses as much as digits as its factorization.

47506621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 47506621 is about 6892.5046971330. The cubic root of 47506621 is about 362.1746483864.

The spelling of 47506621 in words is "forty-seven million, five hundred six thousand, six hundred twenty-one".