1545489 has 24 divisors (see below), whose sum is σ = 2482272. Its totient is φ = 918720.

The previous prime is 1545473. The next prime is 1545493. The reversal of 1545489 is 9845451.

It is not a de Polignac number, because 1545489 - 2⁴ = 1545473 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1545449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6517 + ... + 6749.

It is an arithmetic number, because the mean of its divisors is an integer number (103428).

2^1545489 is an apocalyptic number.

It is an amenable number.

1545489 is a deficient number, since it is larger than the sum of its proper divisors (936783).

1545489 is a wasteful number, since it uses less digits than its factorization.

1545489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317 (or 314 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 1545489 is about 1243.1769785513. The cubic root of 1545489 is about 115.6170736227.

It can be divided in two parts, 1 and 545489, that added together give a triangular number (545490 = T₁₀₄₄).

The spelling of 1545489 in words is "one million, five hundred forty-five thousand, four hundred eighty-nine".