5202545721 has 8 divisors (see below), whose sum is σ = 6959324064. Its totient is φ = 3457065600.

The previous prime is 5202545713. The next prime is 5202545723. The reversal of 5202545721 is 1275452025.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5202545721 - 2³ = 5202545713 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5202545723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2823480 + ... + 2825321.

It is an arithmetic number, because the mean of its divisors is an integer number (869915508).

Almost surely, 2^5202545721 is an apocalyptic number.

It is an amenable number.

5202545721 is a deficient number, since it is larger than the sum of its proper divisors (1756778343).

5202545721 is a wasteful number, since it uses less digits than its factorization.

5202545721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5649111.

The product of its (nonzero) digits is 28000, while the sum is 33.

The square root of 5202545721 is about 72128.6747486740. The cubic root of 5202545721 is about 1732.7608829021.

Adding to 5202545721 its reverse (1275452025), we get a palindrome (6477997746).

The spelling of 5202545721 in words is "five billion, two hundred two million, five hundred forty-five thousand, seven hundred twenty-one".