2581308551 has 2 divisors, whose sum is σ = 2581308552. Its totient is φ = 2581308550.

The previous prime is 2581308491. The next prime is 2581308559. The reversal of 2581308551 is 1558031852.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2581308551 - 2¹⁰ = 2581307527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2581308559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1290654275 + 1290654276.

It is an arithmetic number, because the mean of its divisors is an integer number (1290654276).

Almost surely, 2^2581308551 is an apocalyptic number.

2581308551 is a deficient number, since it is larger than the sum of its proper divisors (1).

2581308551 is an equidigital number, since it uses as much as digits as its factorization.

2581308551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48000, while the sum is 38.

The square root of 2581308551 is about 50806.5798002582. The cubic root of 2581308551 is about 1371.7658071299.

The spelling of 2581308551 in words is "two billion, five hundred eighty-one million, three hundred eight thousand, five hundred fifty-one".