5213121245 has 4 divisors (see below), whose sum is σ = 6255745500. Its totient is φ = 4170496992.

The previous prime is 5213121227. The next prime is 5213121269. The reversal of 5213121245 is 5421213125.

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 1088142169 + 4124979076 = 32987^2 + 64226^2 .

It is a cyclic number.

It is not a de Polignac number, because 5213121245 - 2⁸ = 5213120989 is a prime.

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, 521312120 + ... + 521312129.

It is an arithmetic number, because the mean of its divisors is an integer number (1563936375).

Almost surely, 2^5213121245 is an apocalyptic number.

It is an amenable number.

5213121245 is a deficient number, since it is larger than the sum of its proper divisors (1042624255).

5213121245 is a wasteful number, since it uses less digits than its factorization.

5213121245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1042624254.

The product of its digits is 2400, while the sum is 26.

The square root of 5213121245 is about 72201.9476537856. The cubic root of 5213121245 is about 1733.9341836037.

The spelling of 5213121245 in words is "five billion, two hundred thirteen million, one hundred twenty-one thousand, two hundred forty-five".