1501505 has 4 divisors (see below), whose sum is σ = 1801812. Its totient is φ = 1201200.

The previous prime is 1501501. The next prime is 1501523. The reversal of 1501505 is 5051051.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5051051 = 2143 ⋅2357.

It can be written as a sum of positive squares in 2 ways, for example, as 452929 + 1048576 = 673^2 + 1024^2 .

It is not a de Polignac number, because 1501505 - 2² = 1501501 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1501501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150146 + ... + 150155.

It is an arithmetic number, because the mean of its divisors is an integer number (450453).

2^1501505 is an apocalyptic number.

It is an amenable number.

1501505 is a deficient number, since it is larger than the sum of its proper divisors (300307).

1501505 is an equidigital number, since it uses as much as digits as its factorization.

1501505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300306.

The product of its (nonzero) digits is 125, while the sum is 17.

The square root of 1501505 is about 1225.3591310306. The cubic root of 1501505 is about 114.5096957904.

Adding to 1501505 its reverse (5051051), we get a palindrome (6552556).

The spelling of 1501505 in words is "one million, five hundred one thousand, five hundred five".