2551124549 has 2 divisors, whose sum is σ = 2551124550. Its totient is φ = 2551124548.

The previous prime is 2551124491. The next prime is 2551124579. The reversal of 2551124549 is 9454211552.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2392188100 + 158936449 = 48910^2 + 12607^2 .

It is a cyclic number.

It is not a de Polignac number, because 2551124549 - 2¹⁶ = 2551059013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2551124579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1275562274 + 1275562275.

It is an arithmetic number, because the mean of its divisors is an integer number (1275562275).

Almost surely, 2^2551124549 is an apocalyptic number.

It is an amenable number.

2551124549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2551124549 is an equidigital number, since it uses as much as digits as its factorization.

2551124549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72000, while the sum is 38.

The square root of 2551124549 is about 50508.6581587751. The cubic root of 2551124549 is about 1366.3980093434.

The spelling of 2551124549 in words is "two billion, five hundred fifty-one million, one hundred twenty-four thousand, five hundred forty-nine".