1145015563 has 4 divisors (see below), whose sum is σ = 1205279560. Its totient is φ = 1084751568.

The previous prime is 1145015561. The next prime is 1145015591. The reversal of 1145015563 is 3655105411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1145015563 - 2¹ = 1145015561 is a prime.

It is a super-2 number, since 2×1145015563² = 2622121279024413938, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1145015561) 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, 30131970 + ... + 30132007.

It is an arithmetic number, because the mean of its divisors is an integer number (301319890).

Almost surely, 2^1145015563 is an apocalyptic number.

1145015563 is a deficient number, since it is larger than the sum of its proper divisors (60263997).

1145015563 is an equidigital number, since it uses as much as digits as its factorization.

1145015563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60263996.

The product of its (nonzero) digits is 9000, while the sum is 31.

The square root of 1145015563 is about 33838.0785949794. The cubic root of 1145015563 is about 1046.1736964879.

The spelling of 1145015563 in words is "one billion, one hundred forty-five million, fifteen thousand, five hundred sixty-three".