1145511 has 12 divisors (see below), whose sum is σ = 1752192. Its totient is φ = 718656.

The previous prime is 1145509. The next prime is 1145533. The reversal of 1145511 is 1155411.

It is a happy number.

1145511 is a `hidden beast` number, since 114 + 551 + 1 = 666.

It is not a de Polignac number, because 1145511 - 2¹ = 1145509 is a prime.

It is a super-2 number, since 2×1145511² = 2624390902242, which contains 22 as substring.

1145511 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145311) 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, 3591 + ... + 3896.

It is an arithmetic number, because the mean of its divisors is an integer number (146016).

2^1145511 is an apocalyptic number.

1145511 is a deficient number, since it is larger than the sum of its proper divisors (606681).

1145511 is a wasteful number, since it uses less digits than its factorization.

1145511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7510 (or 7507 counting only the distinct ones).

The product of its digits is 100, while the sum is 18.

The square root of 1145511 is about 1070.2854759362. The cubic root of 1145511 is about 104.6324564428.

Subtracting from 1145511 its product of digits (100), we obtain a palindrome (1145411).

It can be divided in two parts, 114 and 5511, that added together give a square (5625 = 75²).

The spelling of 1145511 in words is "one million, one hundred forty-five thousand, five hundred eleven".