5251631345 has 8 divisors (see below), whose sum is σ = 6302395176. Its totient is φ = 4201013376.

The previous prime is 5251631327. The next prime is 5251631387. The reversal of 5251631345 is 5431361525.

It can be written as a sum of positive squares in 4 ways, for example, as 339443776 + 4912187569 = 18424^2 + 70087^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5251631345 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72179 + ... + 125351.

It is an arithmetic number, because the mean of its divisors is an integer number (787799397).

Almost surely, 2^5251631345 is an apocalyptic number.

It is an amenable number.

5251631345 is a deficient number, since it is larger than the sum of its proper divisors (1050763831).

5251631345 is a wasteful number, since it uses less digits than its factorization.

5251631345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72931.

The product of its digits is 54000, while the sum is 35.

The square root of 5251631345 is about 72468.1402065763. The cubic root of 5251631345 is about 1738.1933228065.

The spelling of 5251631345 in words is "five billion, two hundred fifty-one million, six hundred thirty-one thousand, three hundred forty-five".