47516621 has 12 divisors (see below), whose sum is σ = 49723380. Its totient is φ = 45394560.

The previous prime is 47516603. The next prime is 47516629. The reversal of 47516621 is 12661574.

It can be written as a sum of positive squares in 6 ways, for example, as 44521 + 47472100 = 211^2 + 6890^2 .

It is a de Polignac number, because none of the positive numbers 2^k-47516621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47516629) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83225 + ... + 83793.

It is an arithmetic number, because the mean of its divisors is an integer number (4143615).

Almost surely, 2^47516621 is an apocalyptic number.

It is an amenable number.

47516621 is a deficient number, since it is larger than the sum of its proper divisors (2206759).

47516621 is an equidigital number, since it uses as much as digits as its factorization.

47516621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704 (or 667 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 47516621 is about 6893.2300846555. The cubic root of 47516621 is about 362.2000588261.

The spelling of 47516621 in words is "forty-seven million, five hundred sixteen thousand, six hundred twenty-one".