2801551549 has 2 divisors, whose sum is σ = 2801551550. Its totient is φ = 2801551548.

The previous prime is 2801551537. The next prime is 2801551591. The reversal of 2801551549 is 9451551082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2067520900 + 734030649 = 45470^2 + 27093^2 .

It is a cyclic number.

It is not a de Polignac number, because 2801551549 - 2¹⁹ = 2801027261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2801552549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1400775774 + 1400775775.

It is an arithmetic number, because the mean of its divisors is an integer number (1400775775).

Almost surely, 2^2801551549 is an apocalyptic number.

It is an amenable number.

2801551549 is a deficient number, since it is larger than the sum of its proper divisors (1).

2801551549 is an equidigital number, since it uses as much as digits as its factorization.

2801551549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72000, while the sum is 40.

The square root of 2801551549 is about 52929.6849508855. The cubic root of 2801551549 is about 1409.7200371339.

The spelling of 2801551549 in words is "two billion, eight hundred one million, five hundred fifty-one thousand, five hundred forty-nine".