5151540521 has 2 divisors, whose sum is σ = 5151540522. Its totient is φ = 5151540520.

The previous prime is 5151540517. The next prime is 5151540533. The reversal of 5151540521 is 1250451515.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4390387600 + 761152921 = 66260^2 + 27589^2 .

It is a cyclic number.

It is not a de Polignac number, because 5151540521 - 2² = 5151540517 is a prime.

It is not a weakly prime, because it can be changed into another prime (5151540551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2575770260 + 2575770261.

It is an arithmetic number, because the mean of its divisors is an integer number (2575770261).

Almost surely, 2^5151540521 is an apocalyptic number.

It is an amenable number.

5151540521 is a deficient number, since it is larger than the sum of its proper divisors (1).

5151540521 is an equidigital number, since it uses as much as digits as its factorization.

5151540521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5000, while the sum is 29.

The square root of 5151540521 is about 71774.2329878906. The cubic root of 5151540521 is about 1727.0796756834.

The spelling of 5151540521 in words is "five billion, one hundred fifty-one million, five hundred forty thousand, five hundred twenty-one".