47494621 has 2 divisors, whose sum is σ = 47494622. Its totient is φ = 47494620.

The previous prime is 47494597. The next prime is 47494631. The reversal of 47494621 is 12649474.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27154521 + 20340100 = 5211^2 + 4510^2 .

It is a cyclic number.

It is not a de Polignac number, because 47494621 - 2¹¹ = 47492573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47494631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23747310 + 23747311.

It is an arithmetic number, because the mean of its divisors is an integer number (23747311).

Almost surely, 2^47494621 is an apocalyptic number.

It is an amenable number.

47494621 is a deficient number, since it is larger than the sum of its proper divisors (1).

47494621 is an equidigital number, since it uses as much as digits as its factorization.

47494621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 37.

The square root of 47494621 is about 6891.6341313218. The cubic root of 47494621 is about 362.1441511513.

The spelling of 47494621 in words is "forty-seven million, four hundred ninety-four thousand, six hundred twenty-one".