5155204581 has 10 divisors (see below), whose sum is σ = 7700984742. Its totient is φ = 3436803000.

The previous prime is 5155204543. The next prime is 5155204589. The reversal of 5155204581 is 1854025515.

5155204581 is a `hidden beast` number, since 5 + 1 + 55 + 20 + 4 + 581 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4929303681 + 225900900 = 70209^2 + 15030^2 .

It is not a de Polignac number, because 5155204581 - 2¹⁴ = 5155188197 is a prime.

It is a super-2 number, since 2×5155204581² = 53152268543926771122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5155204589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 31822170 + ... + 31822331.

Almost surely, 2^5155204581 is an apocalyptic number.

It is an amenable number.

5155204581 is a deficient number, since it is larger than the sum of its proper divisors (2545780161).

5155204581 is an equidigital number, since it uses as much as digits as its factorization.

5155204581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63644513 (or 63644504 counting only the distinct ones).

The product of its (nonzero) digits is 40000, while the sum is 36.

The square root of 5155204581 is about 71799.7533491585. The cubic root of 5155204581 is about 1727.4890434457.

The spelling of 5155204581 in words is "five billion, one hundred fifty-five million, two hundred four thousand, five hundred eighty-one".