6546501551 has 2 divisors, whose sum is σ = 6546501552. Its totient is φ = 6546501550.

The previous prime is 6546501497. The next prime is 6546501581. The reversal of 6546501551 is 1551056456.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6546501551 - 2²⁶ = 6479392687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6546501581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3273250775 + 3273250776.

It is an arithmetic number, because the mean of its divisors is an integer number (3273250776).

Almost surely, 2^6546501551 is an apocalyptic number.

6546501551 is a deficient number, since it is larger than the sum of its proper divisors (1).

6546501551 is an equidigital number, since it uses as much as digits as its factorization.

6546501551 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90000, while the sum is 38.

The square root of 6546501551 is about 80910.4539043009. The cubic root of 6546501551 is about 1870.6954576266.

The spelling of 6546501551 in words is "six billion, five hundred forty-six million, five hundred one thousand, five hundred fifty-one".