1537489 has 2 divisors, whose sum is σ = 1537490. Its totient is φ = 1537488.

The previous prime is 1537469. The next prime is 1537513. The reversal of 1537489 is 9847351.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1500625 + 36864 = 1225^2 + 192^2 .

It is a cyclic number.

It is not a de Polignac number, because 1537489 - 2⁵ = 1537457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1537439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 768744 + 768745.

It is an arithmetic number, because the mean of its divisors is an integer number (768745).

2^1537489 is an apocalyptic number.

It is an amenable number.

1537489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1537489 is an equidigital number, since it uses as much as digits as its factorization.

1537489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 37.

The square root of 1537489 is about 1239.9552411277. The cubic root of 1537489 is about 115.4172367366.

The spelling of 1537489 in words is "one million, five hundred thirty-seven thousand, four hundred eighty-nine".