1548881 has 2 divisors, whose sum is σ = 1548882. Its totient is φ = 1548880.

The previous prime is 1548871. The next prime is 1548893. The reversal of 1548881 is 1888451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1478656 + 70225 = 1216^2 + 265^2 .

It is a cyclic number.

It is not a de Polignac number, because 1548881 - 2¹⁰ = 1547857 is a prime.

It is a super-2 number, since 2×1548881² = 4798064704322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1548871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 774440 + 774441.

It is an arithmetic number, because the mean of its divisors is an integer number (774441).

2^1548881 is an apocalyptic number.

It is an amenable number.

1548881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1548881 is an equidigital number, since it uses as much as digits as its factorization.

1548881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10240, while the sum is 35.

The square root of 1548881 is about 1244.5404774454. The cubic root of 1548881 is about 115.7015962889.

The spelling of 1548881 in words is "one million, five hundred forty-eight thousand, eight hundred eighty-one".