5211951521 has 16 divisors (see below), whose sum is σ = 6018144000. Its totient is φ = 4421262528.

The previous prime is 5211951509. The next prime is 5211951527. The reversal of 5211951521 is 1251591125.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5211951521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5211951527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 746555 + ... + 753503.

It is an arithmetic number, because the mean of its divisors is an integer number (376134000).

Almost surely, 2^5211951521 is an apocalyptic number.

It is an amenable number.

5211951521 is a deficient number, since it is larger than the sum of its proper divisors (806192479).

5211951521 is a wasteful number, since it uses less digits than its factorization.

5211951521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8048.

The product of its digits is 4500, while the sum is 32.

The square root of 5211951521 is about 72193.8468361397. The cubic root of 5211951521 is about 1733.8044867579.

The spelling of 5211951521 in words is "five billion, two hundred eleven million, nine hundred fifty-one thousand, five hundred twenty-one".