5157741581 has 4 divisors (see below), whose sum is σ = 5180264700. Its totient is φ = 5135218464.

The previous prime is 5157741569. The next prime is 5157741599. The reversal of 5157741581 is 1851477515.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2944039081 + 2213702500 = 54259^2 + 47050^2 .

It is a cyclic number.

It is not a de Polignac number, because 5157741581 - 2⁶ = 5157741517 is a prime.

It is a super-3 number, since 3×5157741581³ (a number of 30 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5157743581) 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, 11261216 + ... + 11261673.

It is an arithmetic number, because the mean of its divisors is an integer number (1295066175).

Almost surely, 2^5157741581 is an apocalyptic number.

It is an amenable number.

5157741581 is a deficient number, since it is larger than the sum of its proper divisors (22523119).

5157741581 is a wasteful number, since it uses less digits than its factorization.

5157741581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22523118.

The product of its digits is 196000, while the sum is 44.

The square root of 5157741581 is about 71817.4183676913. The cubic root of 5157741581 is about 1727.7723765897.

The spelling of 5157741581 in words is "five billion, one hundred fifty-seven million, seven hundred forty-one thousand, five hundred eighty-one".