5071945381 has 8 divisors (see below), whose sum is σ = 5169166200. Its totient is φ = 4975646400.

The previous prime is 5071945369. The next prime is 5071945387. The reversal of 5071945381 is 1835491705.

It can be written as a sum of positive squares in 4 ways, for example, as 3182652225 + 1889293156 = 56415^2 + 43466^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 5071945381 - 2¹⁹ = 5071421093 is a prime.

It is a super-2 number, since 2×5071945381² = 51449259895694470322, 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 (5071945387) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219346 + ... + 241363.

It is an arithmetic number, because the mean of its divisors is an integer number (646145775).

Almost surely, 2^5071945381 is an apocalyptic number.

It is an amenable number.

5071945381 is a deficient number, since it is larger than the sum of its proper divisors (97220819).

5071945381 is a wasteful number, since it uses less digits than its factorization.

5071945381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460919.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 5071945381 is about 71217.5917944436. The cubic root of 5071945381 is about 1718.1385781290.

It can be divided in two parts, 50719 and 45381, that added together give a square (96100 = 310²).

The spelling of 5071945381 in words is "five billion, seventy-one million, nine hundred forty-five thousand, three hundred eighty-one".