2551493853 has 6 divisors (see below), whose sum is σ = 3685491134. Its totient is φ = 1700995896.

The previous prime is 2551493851. The next prime is 2551493887. The reversal of 2551493853 is 3583941552.

2551493853 is a `hidden beast` number, since 2 + 551 + 4 + 93 + 8 + 5 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2255585049 + 295908804 = 47493^2 + 17202^2 .

It is not a de Polignac number, because 2551493853 - 2¹ = 2551493851 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2551493799 and 2551493808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551493851) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 141749650 + ... + 141749667.

Almost surely, 2^2551493853 is an apocalyptic number.

It is an amenable number.

2551493853 is a deficient number, since it is larger than the sum of its proper divisors (1133997281).

2551493853 is a wasteful number, since it uses less digits than its factorization.

2551493853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283499323 (or 283499320 counting only the distinct ones).

The product of its digits is 648000, while the sum is 45.

The square root of 2551493853 is about 50512.3138749355. The cubic root of 2551493853 is about 1366.4639399938.

The spelling of 2551493853 in words is "two billion, five hundred fifty-one million, four hundred ninety-three thousand, eight hundred fifty-three".