1115001 has 12 divisors (see below), whose sum is σ = 1620580. Its totient is φ = 738720.

The previous prime is 1114999. The next prime is 1115011. The reversal of 1115001 is 1005111.

It can be written as a sum of positive squares in 2 ways, for example, as 783225 + 331776 = 885^2 + 576^2 .

It is not a de Polignac number, because 1115001 - 2¹ = 1114999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1115011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1791 + ... + 2331.

2^1115001 is an apocalyptic number.

It is an amenable number.

1115001 is a deficient number, since it is larger than the sum of its proper divisors (505579).

1115001 is a wasteful number, since it uses less digits than its factorization.

1115001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776 (or 773 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 9.

The square root of 1115001 is about 1055.9360776108. The cubic root of 1115001 is about 103.6951439820.

The spelling of 1115001 in words is "one million, one hundred fifteen thousand, one".