2557549042 has 8 divisors (see below), whose sum is σ = 3960076032. Its totient is φ = 1237523700.

The previous prime is 2557549031. The next prime is 2557549069. The reversal of 2557549042 is 2409457552.

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

It is a self number, because there is not a number n which added to its sum of digits gives 2557549042.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20625334 + ... + 20625457.

It is an arithmetic number, because the mean of its divisors is an integer number (495009504).

Almost surely, 2^2557549042 is an apocalyptic number.

2557549042 is a deficient number, since it is larger than the sum of its proper divisors (1402526990).

2557549042 is a wasteful number, since it uses less digits than its factorization.

2557549042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41250824.

The product of its (nonzero) digits is 504000, while the sum is 43.

The square root of 2557549042 is about 50572.2161072659. The cubic root of 2557549042 is about 1367.5440471894.

The spelling of 2557549042 in words is "two billion, five hundred fifty-seven million, five hundred forty-nine thousand, forty-two".