11501145 has 24 divisors (see below), whose sum is σ = 20097792. Its totient is φ = 6084000.

The previous prime is 11501143. The next prime is 11501177. The reversal of 11501145 is 54110511.

It is a happy number.

It is not a de Polignac number, because 11501145 - 2¹ = 11501143 is a prime.

It is a super-2 number, since 2×11501145² = 264552672622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11501143) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4920 + ... + 6870.

It is an arithmetic number, because the mean of its divisors is an integer number (837408).

Almost surely, 2^11501145 is an apocalyptic number.

11501145 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11501145 is a deficient number, since it is larger than the sum of its proper divisors (8596647).

11501145 is a wasteful number, since it uses less digits than its factorization.

11501145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2093 (or 2090 counting only the distinct ones).

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

The square root of 11501145 is about 3391.3338084005. Note that the first 3 decimals coincide. The cubic root of 11501145 is about 225.7253627414.

Adding to 11501145 its reverse (54110511), we get a palindrome (65611656).

The spelling of 11501145 in words is "eleven million, five hundred one thousand, one hundred forty-five".