11172747 has 4 divisors (see below), whose sum is σ = 14897000. Its totient is φ = 7448496.

The previous prime is 11172739. The next prime is 11172767. The reversal of 11172747 is 74727111.

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

It is not a de Polignac number, because 11172747 - 2³ = 11172739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11172767) 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, 1862122 + ... + 1862127.

It is an arithmetic number, because the mean of its divisors is an integer number (3724250).

Almost surely, 2^11172747 is an apocalyptic number.

11172747 is a deficient number, since it is larger than the sum of its proper divisors (3724253).

11172747 is an equidigital number, since it uses as much as digits as its factorization.

11172747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3724252.

The product of its digits is 2744, while the sum is 30.

The square root of 11172747 is about 3342.5659305390. The cubic root of 11172747 is about 223.5561670367.

Adding to 11172747 its reverse (74727111), we get a palindrome (85899858).

The spelling of 11172747 in words is "eleven million, one hundred seventy-two thousand, seven hundred forty-seven".