548801581 has 2 divisors, whose sum is σ = 548801582. Its totient is φ = 548801580.

The previous prime is 548801557. The next prime is 548801621. The reversal of 548801581 is 185108845.

It is an a-pointer prime, because the next prime (548801621) can be obtained adding 548801581 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 301022500 + 247779081 = 17350^2 + 15741^2 .

It is a cyclic number.

It is not a de Polignac number, because 548801581 - 2¹³ = 548793389 is a prime.

It is a super-2 number, since 2×548801581² = 602366350616199122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (548801521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274400790 + 274400791.

It is an arithmetic number, because the mean of its divisors is an integer number (274400791).

Almost surely, 2^548801581 is an apocalyptic number.

It is an amenable number.

548801581 is a deficient number, since it is larger than the sum of its proper divisors (1).

548801581 is an equidigital number, since it uses as much as digits as its factorization.

548801581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51200, while the sum is 40.

The square root of 548801581 is about 23426.5144867947. The cubic root of 548801581 is about 818.7257529016.

The spelling of 548801581 in words is "five hundred forty-eight million, eight hundred one thousand, five hundred eighty-one".