1015506 has 12 divisors (see below), whose sum is σ = 2200302. Its totient is φ = 338496.

The previous prime is 1015501. The next prime is 1015507. The reversal of 1015506 is 6055101.

It can be written as a sum of positive squares in only one way, i.e., 826281 + 189225 = 909^2 + 435^2 .

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 56417 = 1015506 / (1 + 0 + 1 + 5 + 5 + 0 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1015501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28191 + ... + 28226.

2^1015506 is an apocalyptic number.

1015506 is an abundant number, since it is smaller than the sum of its proper divisors (1184796).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1015506 is a wasteful number, since it uses less digits than its factorization.

1015506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56425 (or 56422 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The square root of 1015506 is about 1007.7231762741. The cubic root of 1015506 is about 100.5142179335.

It can be divided in two parts, 1015 and 506, that added together give a square (1521 = 39²).

The spelling of 1015506 in words is "one million, fifteen thousand, five hundred six".