1145815 has 16 divisors (see below), whose sum is σ = 1524096. Its totient is φ = 820000.

The previous prime is 1145803. The next prime is 1145831. The reversal of 1145815 is 5185411.

It is a happy number.

It is not a de Polignac number, because 1145815 - 2⁹ = 1145303 is a prime.

It is an Ulam number.

It is a Duffinian number.

1145815 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4440 + ... + 4690.

It is an arithmetic number, because the mean of its divisors is an integer number (95256).

2^1145815 is an apocalyptic number.

1145815 is a deficient number, since it is larger than the sum of its proper divisors (378281).

1145815 is a wasteful number, since it uses less digits than its factorization.

1145815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 350.

The product of its digits is 800, while the sum is 25.

The square root of 1145815 is about 1070.4274846995. The cubic root of 1145815 is about 104.6417115419.

It can be divided in two parts, 114 and 5815, that added together give a square (5929 = 77²).

The spelling of 1145815 in words is "one million, one hundred forty-five thousand, eight hundred fifteen".