5447740561 has 4 divisors (see below), whose sum is σ = 5580612324. Its totient is φ = 5314868800.

The previous prime is 5447740513. The next prime is 5447740579. The reversal of 5447740561 is 1650477445.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1650477445 = 5 ⋅330095489.

It can be written as a sum of positive squares in 2 ways, for example, as 159542161 + 5288198400 = 12631^2 + 72720^2 .

It is a cyclic number.

It is not a de Polignac number, because 5447740561 - 2⁷ = 5447740433 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5447740261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66435820 + ... + 66435901.

It is an arithmetic number, because the mean of its divisors is an integer number (1395153081).

Almost surely, 2^5447740561 is an apocalyptic number.

It is an amenable number.

5447740561 is a deficient number, since it is larger than the sum of its proper divisors (132871763).

5447740561 is a wasteful number, since it uses less digits than its factorization.

5447740561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132871762.

The product of its (nonzero) digits is 470400, while the sum is 43.

The square root of 5447740561 is about 73808.8108629315. The cubic root of 5447740561 is about 1759.5656384410.

The spelling of 5447740561 in words is "five billion, four hundred forty-seven million, seven hundred forty thousand, five hundred sixty-one".