5481989 has 2 divisors, whose sum is σ = 5481990. Its totient is φ = 5481988.

The previous prime is 5481967. The next prime is 5482019. The reversal of 5481989 is 9891845.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3869089 + 1612900 = 1967^2 + 1270^2 .

It is a cyclic number.

It is not a de Polignac number, because 5481989 - 2⁸ = 5481733 is a prime.

It is a super-2 number, since 2×5481989² = 60104406792242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5481689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2740994 + 2740995.

It is an arithmetic number, because the mean of its divisors is an integer number (2740995).

Almost surely, 2^5481989 is an apocalyptic number.

It is an amenable number.

5481989 is a deficient number, since it is larger than the sum of its proper divisors (1).

5481989 is an equidigital number, since it uses as much as digits as its factorization.

5481989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 44.

The square root of 5481989 is about 2341.3647729476. The cubic root of 5481989 is about 176.3245239227.

The spelling of 5481989 in words is "five million, four hundred eighty-one thousand, nine hundred eighty-nine".