1505513 has 4 divisors (see below), whose sum is σ = 1507968. Its totient is φ = 1503060.

The previous prime is 1505507. The next prime is 1505519. The reversal of 1505513 is 3155051.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (1505507) and next prime (1505519).

It is a cyclic number.

It is not a de Polignac number, because 1505513 - 2¹⁴ = 1489129 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1505519) 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 3 ways as a sum of consecutive naturals, for example, 608 + ... + 1838.

It is an arithmetic number, because the mean of its divisors is an integer number (376992).

2^1505513 is an apocalyptic number.

It is an amenable number.

1505513 is a deficient number, since it is larger than the sum of its proper divisors (2455).

1505513 is a wasteful number, since it uses less digits than its factorization.

1505513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2454.

The product of its (nonzero) digits is 375, while the sum is 20.

The square root of 1505513 is about 1226.9934800153. The cubic root of 1505513 is about 114.6114930092.

The spelling of 1505513 in words is "one million, five hundred five thousand, five hundred thirteen".