2554253666 has 4 divisors (see below), whose sum is σ = 3831380502. Its totient is φ = 1277126832.

The previous prime is 2554253659. The next prime is 2554253693. The reversal of 2554253666 is 6663524552.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2423494441 + 130759225 = 49229^2 + 11435^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638563415 + ... + 638563418.

Almost surely, 2^2554253666 is an apocalyptic number.

2554253666 is a deficient number, since it is larger than the sum of its proper divisors (1277126836).

2554253666 is a wasteful number, since it uses less digits than its factorization.

2554253666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277126835.

The product of its digits is 1296000, while the sum is 44.

The square root of 2554253666 is about 50539.6247117052. The cubic root of 2554253666 is about 1366.9564391967.

The spelling of 2554253666 in words is "two billion, five hundred fifty-four million, two hundred fifty-three thousand, six hundred sixty-six".