5201536621 has 4 divisors (see below), whose sum is σ = 5201828892. Its totient is φ = 5201244352.

The previous prime is 5201536601. The next prime is 5201536693. The reversal of 5201536621 is 1266351025.

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 105575625 + 5095960996 = 10275^2 + 71386^2 .

It is a cyclic number.

It is not a de Polignac number, because 5201536621 - 2⁵ = 5201536589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5201536601) 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, 117580 + ... + 155653.

It is an arithmetic number, because the mean of its divisors is an integer number (1300457223).

Almost surely, 2^5201536621 is an apocalyptic number.

It is an amenable number.

5201536621 is a deficient number, since it is larger than the sum of its proper divisors (292271).

5201536621 is a wasteful number, since it uses less digits than its factorization.

5201536621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292270.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 5201536621 is about 72121.6792719082. The cubic root of 5201536621 is about 1732.6488453111.

Adding to 5201536621 its reverse (1266351025), we get a palindrome (6467887646).

The spelling of 5201536621 in words is "five billion, two hundred one million, five hundred thirty-six thousand, six hundred twenty-one".