2557451066 has 16 divisors (see below), whose sum is σ = 4101274944. Its totient is φ = 1191820224.

The previous prime is 2557451023. The next prime is 2557451069. The reversal of 2557451066 is 6601547552.

It is not an unprimeable number, because it can be changed into a prime (2557451069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 361640 + ... + 368643.

It is an arithmetic number, because the mean of its divisors is an integer number (256329684).

Almost surely, 2^2557451066 is an apocalyptic number.

2557451066 is a deficient number, since it is larger than the sum of its proper divisors (1543823878).

2557451066 is a wasteful number, since it uses less digits than its factorization.

2557451066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730405.

The product of its (nonzero) digits is 252000, while the sum is 41.

The square root of 2557451066 is about 50571.2474238079. The cubic root of 2557451066 is about 1367.5265840891.

The spelling of 2557451066 in words is "two billion, five hundred fifty-seven million, four hundred fifty-one thousand, sixty-six".