1504945 has 16 divisors (see below), whose sum is σ = 1970640. Its totient is φ = 1103232.

The previous prime is 1504907. The next prime is 1504949. The reversal of 1504945 is 5494051.

1504945 = 119² + 120² + ... + 183².

It can be written as a sum of positive squares in 8 ways, for example, as 1073296 + 431649 = 1036^2 + 657^2 .

It is not a de Polignac number, because 1504945 - 2⁷ = 1504817 is a prime.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1504949) 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 in 15 ways as a sum of consecutive naturals, for example, 10917 + ... + 11053.

It is an arithmetic number, because the mean of its divisors is an integer number (123165).

2^1504945 is an apocalyptic number.

It is an amenable number.

1504945 is a deficient number, since it is larger than the sum of its proper divisors (465695).

1504945 is an equidigital number, since it uses as much as digits as its factorization.

1504945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181 (or 155 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1504945 is about 1226.7619981072. The cubic root of 1504945 is about 114.5970776534.

Adding to 1504945 its reverse (5494051), we get a palindrome (6998996).

The spelling of 1504945 in words is "one million, five hundred four thousand, nine hundred forty-five".