2554621566 has 48 divisors (see below), whose sum is σ = 5948611200. Its totient is φ = 729252720.

The previous prime is 2554621541. The next prime is 2554621577. The reversal of 2554621566 is 6651264552.

It is a happy number.

2554621566 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 408201 + ... + 414411.

It is an arithmetic number, because the mean of its divisors is an integer number (123929400).

Almost surely, 2^2554621566 is an apocalyptic number.

2554621566 is an abundant number, since it is smaller than the sum of its proper divisors (3393989634).

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

2554621566 is a wasteful number, since it uses less digits than its factorization.

2554621566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7629 (or 7622 counting only the distinct ones).

The product of its digits is 432000, while the sum is 42.

The square root of 2554621566 is about 50543.2642990142. The cubic root of 2554621566 is about 1367.0220655592.

The spelling of 2554621566 in words is "two billion, five hundred fifty-four million, six hundred twenty-one thousand, five hundred sixty-six".