2550857749 has 24 divisors (see below), whose sum is σ = 2960133120. Its totient is φ = 2190418560.

The previous prime is 2550857741. The next prime is 2550857773. The reversal of 2550857749 is 9477580552.

It is a happy number.

It is not a de Polignac number, because 2550857749 - 2³ = 2550857741 is a prime.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2550857696 and 2550857705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2550857741) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 879069 + ... + 881965.

It is an arithmetic number, because the mean of its divisors is an integer number (123338880).

Almost surely, 2^2550857749 is an apocalyptic number.

It is an amenable number.

2550857749 is a deficient number, since it is larger than the sum of its proper divisors (409275371).

2550857749 is a wasteful number, since it uses less digits than its factorization.

2550857749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3321 (or 3310 counting only the distinct ones).

The product of its (nonzero) digits is 3528000, while the sum is 52.

The square root of 2550857749 is about 50506.0169583783. The cubic root of 2550857749 is about 1366.3503744421.

The spelling of 2550857749 in words is "two billion, five hundred fifty million, eight hundred fifty-seven thousand, seven hundred forty-nine".