2549251393 has 4 divisors (see below), whose sum is σ = 2745347668. Its totient is φ = 2353155120.

The previous prime is 2549251357. The next prime is 2549251417. The reversal of 2549251393 is 3931529452.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 760215184 + 1789036209 = 27572^2 + 42297^2 .

It is a cyclic number.

It is not a de Polignac number, because 2549251393 - 2²⁵ = 2515696961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2549251193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 98048118 + ... + 98048143.

It is an arithmetic number, because the mean of its divisors is an integer number (686336917).

Almost surely, 2^2549251393 is an apocalyptic number.

It is an amenable number.

2549251393 is a deficient number, since it is larger than the sum of its proper divisors (196096275).

2549251393 is a wasteful number, since it uses less digits than its factorization.

2549251393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196096274.

The product of its digits is 291600, while the sum is 43.

The square root of 2549251393 is about 50490.1118339027. Note that the first 3 decimals coincide. The cubic root of 2549251393 is about 1366.0635028325.

The spelling of 2549251393 in words is "two billion, five hundred forty-nine million, two hundred fifty-one thousand, three hundred ninety-three".