1540545 has 16 divisors (see below), whose sum is σ = 2545152. Its totient is φ = 794880.

The previous prime is 1540543. The next prime is 1540559. The reversal of 1540545 is 5450451.

It is not a de Polignac number, because 1540545 - 2¹ = 1540543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1540541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1192 + ... + 2121.

It is an arithmetic number, because the mean of its divisors is an integer number (159072).

2^1540545 is an apocalyptic number.

1540545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1540545 is a deficient number, since it is larger than the sum of its proper divisors (1004607).

1540545 is a wasteful number, since it uses less digits than its factorization.

1540545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3352.

The product of its (nonzero) digits is 2000, while the sum is 24.

The square root of 1540545 is about 1241.1869319325. The cubic root of 1540545 is about 115.4936560673.

Adding to 1540545 its reverse (5450451), we get a palindrome (6990996).

The spelling of 1540545 in words is "one million, five hundred forty thousand, five hundred forty-five".