5200101721 has 4 divisors (see below), whose sum is σ = 5213200612. Its totient is φ = 5187002832.

The previous prime is 5200101691. The next prime is 5200101733. The reversal of 5200101721 is 1271010025.

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 3628375696 + 1571726025 = 60236^2 + 39645^2 .

It is a cyclic number.

It is not a de Polignac number, because 5200101721 - 2²¹ = 5198004569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5200101121) 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 3 ways as a sum of consecutive naturals, for example, 6548850 + ... + 6549643.

It is an arithmetic number, because the mean of its divisors is an integer number (1303300153).

Almost surely, 2^5200101721 is an apocalyptic number.

It is an amenable number.

5200101721 is a deficient number, since it is larger than the sum of its proper divisors (13098891).

5200101721 is a wasteful number, since it uses less digits than its factorization.

5200101721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13098890.

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 5200101721 is about 72111.7308140638. The cubic root of 5200101721 is about 1732.4895073656.

Adding to 5200101721 its reverse (1271010025), we get a palindrome (6471111746).

It can be divided in two parts, 520010 and 1721, that added together give a triangular number (521731 = T₁₀₂₁).

The spelling of 5200101721 in words is "five billion, two hundred million, one hundred one thousand, seven hundred twenty-one".