5205207872 has 14 divisors (see below), whose sum is σ = 10329084498. Its totient is φ = 2602603904.

The previous prime is 5205207863. The next prime is 5205207881. The reversal of 5205207872 is 2787025025.

It is an interprime number because it is at equal distance from previous prime (5205207863) and next prime (5205207881).

It can be written as a sum of positive squares in only one way, i.e., 5141463616 + 63744256 = 71704^2 + 7984^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40665623 + ... + 40665750.

Almost surely, 2^5205207872 is an apocalyptic number.

It is an amenable number.

5205207872 is a deficient number, since it is larger than the sum of its proper divisors (5123876626).

5205207872 is an equidigital number, since it uses as much as digits as its factorization.

5205207872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81331385 (or 81331375 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 38.

The square root of 5205207872 is about 72147.1265678682. The cubic root of 5205207872 is about 1733.0563846804.

The spelling of 5205207872 in words is "five billion, two hundred five million, two hundred seven thousand, eight hundred seventy-two".