2553774578 has 16 divisors (see below), whose sum is σ = 4132526040. Its totient is φ = 1179100416.

The previous prime is 2553774569. The next prime is 2553774583. The reversal of 2553774578 is 8754773552.

It can be written as a sum of positive squares in 4 ways, for example, as 2416017409 + 137757169 = 49153^2 + 11737^2 .

It is a Harshad number since it is a multiple of its sum of digits (53).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706793 + ... + 710396.

Almost surely, 2^2553774578 is an apocalyptic number.

2553774578 is a deficient number, since it is larger than the sum of its proper divisors (1578751462).

2553774578 is a wasteful number, since it uses less digits than its factorization.

2553774578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1417261.

The product of its digits is 8232000, while the sum is 53.

The square root of 2553774578 is about 50534.8847629041. The cubic root of 2553774578 is about 1366.8709695630.

The spelling of 2553774578 in words is "two billion, five hundred fifty-three million, seven hundred seventy-four thousand, five hundred seventy-eight".