5447317621 has 2 divisors, whose sum is σ = 5447317622. Its totient is φ = 5447317620.

The previous prime is 5447317609. The next prime is 5447317657. The reversal of 5447317621 is 1267137445.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5397106225 + 50211396 = 73465^2 + 7086^2 .

It is a cyclic number.

It is not a de Polignac number, because 5447317621 - 2²⁷ = 5313099893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5447317661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2723658810 + 2723658811.

It is an arithmetic number, because the mean of its divisors is an integer number (2723658811).

Almost surely, 2^5447317621 is an apocalyptic number.

It is an amenable number.

5447317621 is a deficient number, since it is larger than the sum of its proper divisors (1).

5447317621 is an equidigital number, since it uses as much as digits as its factorization.

5447317621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 40.

The square root of 5447317621 is about 73805.9457022265. The cubic root of 5447317621 is about 1759.5201021346.

The spelling of 5447317621 in words is "five billion, four hundred forty-seven million, three hundred seventeen thousand, six hundred twenty-one".