2015563 has 8 divisors (see below), whose sum is σ = 2222640. Its totient is φ = 1812480.

The previous prime is 2015557. The next prime is 2015567. The reversal of 2015563 is 3655102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2015563 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2015567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123 + ... + 2011.

It is an arithmetic number, because the mean of its divisors is an integer number (277830).

2^2015563 is an apocalyptic number.

2015563 is a deficient number, since it is larger than the sum of its proper divisors (207077).

2015563 is a wasteful number, since it uses less digits than its factorization.

2015563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1997.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 2015563 is about 1419.7052510997. The cubic root of 2015563 is about 126.3180634855.

The spelling of 2015563 in words is "two million, fifteen thousand, five hundred sixty-three".