5206140245 has 4 divisors (see below), whose sum is σ = 6247368300. Its totient is φ = 4164912192.

The previous prime is 5206140209. The next prime is 5206140257. The reversal of 5206140245 is 5420416025.

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 4156509841 + 1049630404 = 64471^2 + 32398^2 .

It is a cyclic number.

It is not a de Polignac number, because 5206140245 - 2¹² = 5206136149 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520614020 + ... + 520614029.

It is an arithmetic number, because the mean of its divisors is an integer number (1561842075).

Almost surely, 2^5206140245 is an apocalyptic number.

It is an amenable number.

5206140245 is a deficient number, since it is larger than the sum of its proper divisors (1041228055).

5206140245 is a wasteful number, since it uses less digits than its factorization.

5206140245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041228054.

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 5206140245 is about 72153.5878872284. The cubic root of 5206140245 is about 1733.1598553166.

The spelling of 5206140245 in words is "five billion, two hundred six million, one hundred forty thousand, two hundred forty-five".