1672549 has 2 divisors, whose sum is σ = 1672550. Its totient is φ = 1672548.

The previous prime is 1672529. The next prime is 1672553. The reversal of 1672549 is 9452761.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1404225 + 268324 = 1185^2 + 518^2 .

It is a cyclic number.

It is not a de Polignac number, because 1672549 - 2⁷ = 1672421 is a prime.

It is an alternating number because its digits alternate between odd and even.

1672549 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1672519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 836274 + 836275.

It is an arithmetic number, because the mean of its divisors is an integer number (836275).

2^1672549 is an apocalyptic number.

It is an amenable number.

1672549 is a deficient number, since it is larger than the sum of its proper divisors (1).

1672549 is an equidigital number, since it uses as much as digits as its factorization.

1672549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 34.

The square root of 1672549 is about 1293.2706599935. The cubic root of 1672549 is about 118.7024319176.

The spelling of 1672549 in words is "one million, six hundred seventy-two thousand, five hundred forty-nine".