5200029781 has 4 divisors (see below), whose sum is σ = 5200211212. Its totient is φ = 5199848352.

The previous prime is 5200029739. The next prime is 5200029787. The reversal of 5200029781 is 1879200025.

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 2971340100 + 2228689681 = 54510^2 + 47209^2 .

It is a cyclic number.

It is not a de Polignac number, because 5200029781 - 2¹¹ = 5200027733 is a prime.

It is a super-2 number, since 2×5200029781² = 54080619446573815922, 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 (5200029787) 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, 37200 + ... + 108553.

It is an arithmetic number, because the mean of its divisors is an integer number (1300052803).

Almost surely, 2^5200029781 is an apocalyptic number.

It is an amenable number.

5200029781 is a deficient number, since it is larger than the sum of its proper divisors (181431).

5200029781 is a wasteful number, since it uses less digits than its factorization.

5200029781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181430.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 5200029781 is about 72111.2320030659. The cubic root of 5200029781 is about 1732.4815180430.

The spelling of 5200029781 in words is "five billion, two hundred million, twenty-nine thousand, seven hundred eighty-one".