47716621 has 4 divisors (see below), whose sum is σ = 47837212. Its totient is φ = 47596032.

The previous prime is 47716607. The next prime is 47716631. The reversal of 47716621 is 12661774.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12661774 = 2 ⋅6330887.

It can be written as a sum of positive squares in 2 ways, for example, as 18610596 + 29106025 = 4314^2 + 5395^2 .

It is a cyclic number.

It is not a de Polignac number, because 47716621 - 2¹¹ = 47714573 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 (47716601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59700 + ... + 60493.

It is an arithmetic number, because the mean of its divisors is an integer number (11959303).

Almost surely, 2^47716621 is an apocalyptic number.

It is an amenable number.

47716621 is a deficient number, since it is larger than the sum of its proper divisors (120591).

47716621 is a wasteful number, since it uses less digits than its factorization.

47716621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120590.

The product of its digits is 14112, while the sum is 34.

The square root of 47716621 is about 6907.7218386383. The cubic root of 47716621 is about 362.7075206546.

The spelling of 47716621 in words is "forty-seven million, seven hundred sixteen thousand, six hundred twenty-one".