6511000553 has 2 divisors, whose sum is σ = 6511000554. Its totient is φ = 6511000552.

The previous prime is 6511000477. The next prime is 6511000603. The reversal of 6511000553 is 3550001156.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3957416464 + 2553584089 = 62908^2 + 50533^2 .

It is a cyclic number.

It is not a de Polignac number, because 6511000553 - 2¹⁴ = 6510984169 is a prime.

It is not a weakly prime, because it can be changed into another prime (6511000253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3255500276 + 3255500277.

It is an arithmetic number, because the mean of its divisors is an integer number (3255500277).

Almost surely, 2^6511000553 is an apocalyptic number.

It is an amenable number.

6511000553 is a deficient number, since it is larger than the sum of its proper divisors (1).

6511000553 is an equidigital number, since it uses as much as digits as its factorization.

6511000553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 6511000553 is about 80690.7711761388. The cubic root of 6511000553 is about 1867.3077975245.

The spelling of 6511000553 in words is "six billion, five hundred eleven million, five hundred fifty-three", and thus it is an aban number.