5481009 has 12 divisors (see below), whose sum is σ = 7941700. Its totient is φ = 3642624.

The previous prime is 5480989. The next prime is 5481011. The reversal of 5481009 is 9001845.

It can be written as a sum of positive squares in 2 ways, for example, as 3240000 + 2241009 = 1800^2 + 1497^2 .

It is not a de Polignac number, because 5481009 - 2⁵ = 5480977 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5481019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2937 + ... + 4425.

Almost surely, 2^5481009 is an apocalyptic number.

It is an amenable number.

5481009 is a deficient number, since it is larger than the sum of its proper divisors (2460691).

5481009 is a wasteful number, since it uses less digits than its factorization.

5481009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1904 (or 1901 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 5481009 is about 2341.1554839438. The cubic root of 5481009 is about 176.3140162809.

The spelling of 5481009 in words is "five million, four hundred eighty-one thousand, nine".