1503145 has 16 divisors (see below), whose sum is σ = 2095488. Its totient is φ = 1013760.

The previous prime is 1503137. The next prime is 1503149. The reversal of 1503145 is 5413051.

It is not a de Polignac number, because 1503145 - 2³ = 1503137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1503149) 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, 2025 + ... + 2665.

It is an arithmetic number, because the mean of its divisors is an integer number (130968).

2^1503145 is an apocalyptic number.

It is an amenable number.

1503145 is a deficient number, since it is larger than the sum of its proper divisors (592343).

1503145 is an equidigital number, since it uses as much as digits as its factorization.

1503145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 720.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 1503145 is about 1226.0281399707. The cubic root of 1503145 is about 114.5513712138.

Adding to 1503145 its reverse (5413051), we get a palindrome (6916196).

The spelling of 1503145 in words is "one million, five hundred three thousand, one hundred forty-five".