5471534781 has 6 divisors (see below), whose sum is σ = 7903328030. Its totient is φ = 3647689848.

The previous prime is 5471534767. The next prime is 5471534797. The reversal of 5471534781 is 1874351745.

5471534781 is a `hidden beast` number, since 5 + 47 + 1 + 534 + 78 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4801242681 + 670292100 = 69291^2 + 25890^2 .

It is not a de Polignac number, because 5471534781 - 2⁵ = 5471534749 is a prime.

It is a super-2 number, since 2×5471534781² = 59875385719385435922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5471534681) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 303974146 + ... + 303974163.

Almost surely, 2^5471534781 is an apocalyptic number.

It is an amenable number.

5471534781 is a deficient number, since it is larger than the sum of its proper divisors (2431793249).

5471534781 is a wasteful number, since it uses less digits than its factorization.

5471534781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607948315 (or 607948312 counting only the distinct ones).

The product of its digits is 470400, while the sum is 45.

The square root of 5471534781 is about 73969.8234484847. The cubic root of 5471534781 is about 1762.1236826870.

The spelling of 5471534781 in words is "five billion, four hundred seventy-one million, five hundred thirty-four thousand, seven hundred eighty-one".