6551020543 has 2 divisors, whose sum is σ = 6551020544. Its totient is φ = 6551020542.

The previous prime is 6551020447. The next prime is 6551020547. The reversal of 6551020543 is 3450201556.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6551020543 - 2²¹ = 6548923391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6551020547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275510271 + 3275510272.

It is an arithmetic number, because the mean of its divisors is an integer number (3275510272).

Almost surely, 2^6551020543 is an apocalyptic number.

6551020543 is a deficient number, since it is larger than the sum of its proper divisors (1).

6551020543 is an equidigital number, since it uses as much as digits as its factorization.

6551020543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 31.

The square root of 6551020543 is about 80938.3749713324. The cubic root of 6551020543 is about 1871.1258001195.

The spelling of 6551020543 in words is "six billion, five hundred fifty-one million, twenty thousand, five hundred forty-three".