2555221546 has 8 divisors (see below), whose sum is σ = 3834854244. Its totient is φ = 1276936800.

The previous prime is 2555221541. The next prime is 2555221549. The reversal of 2555221546 is 6451225552.

It can be written as a sum of positive squares in 2 ways, for example, as 2534619025 + 20602521 = 50345^2 + 4539^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2555221541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 332235 + ... + 339838.

Almost surely, 2^2555221546 is an apocalyptic number.

2555221546 is a deficient number, since it is larger than the sum of its proper divisors (1279632698).

2555221546 is a wasteful number, since it uses less digits than its factorization.

2555221546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673976.

The product of its digits is 120000, while the sum is 37.

The square root of 2555221546 is about 50549.1992617094. The cubic root of 2555221546 is about 1367.1290770645.

The spelling of 2555221546 in words is "two billion, five hundred fifty-five million, two hundred twenty-one thousand, five hundred forty-six".