2546221566 has 32 divisors (see below), whose sum is σ = 5824032768. Its totient is φ = 726979680.

The previous prime is 2546221553. The next prime is 2546221567. The reversal of 2546221566 is 6651226452.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2546221567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41176 + ... + 82388.

It is an arithmetic number, because the mean of its divisors is an integer number (182001024).

Almost surely, 2^2546221566 is an apocalyptic number.

2546221566 is an abundant number, since it is smaller than the sum of its proper divisors (3277811202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2546221566 is a wasteful number, since it uses less digits than its factorization.

2546221566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42696.

The product of its digits is 172800, while the sum is 39.

The square root of 2546221566 is about 50460.0987513897. The cubic root of 2546221566 is about 1365.5220920076.

The spelling of 2546221566 in words is "two billion, five hundred forty-six million, two hundred twenty-one thousand, five hundred sixty-six".