5648762921 has 2 divisors, whose sum is σ = 5648762922. Its totient is φ = 5648762920.

The previous prime is 5648762813. The next prime is 5648762963. The reversal of 5648762921 is 1292678465.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5129424400 + 519338521 = 71620^2 + 22789^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5648762921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5648762921.

It is not a weakly prime, because it can be changed into another prime (5648762981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2824381460 + 2824381461.

It is an arithmetic number, because the mean of its divisors is an integer number (2824381461).

Almost surely, 2^5648762921 is an apocalyptic number.

It is an amenable number.

5648762921 is a deficient number, since it is larger than the sum of its proper divisors (1).

5648762921 is an equidigital number, since it uses as much as digits as its factorization.

5648762921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 50.

The square root of 5648762921 is about 75158.2525142782. The cubic root of 5648762921 is about 1780.9474946540.

The spelling of 5648762921 in words is "five billion, six hundred forty-eight million, seven hundred sixty-two thousand, nine hundred twenty-one".