1156172 has 12 divisors (see below), whose sum is σ = 2093280. Its totient is φ = 558096.

The previous prime is 1156171. The next prime is 1156217. The reversal of 1156172 is 2716511.

It is not an unprimeable number, because it can be changed into a prime (1156171) 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, 4868 + ... + 5099.

It is an arithmetic number, because the mean of its divisors is an integer number (174440).

2^1156172 is an apocalyptic number.

It is an amenable number.

1156172 is a deficient number, since it is larger than the sum of its proper divisors (937108).

1156172 is a wasteful number, since it uses less digits than its factorization.

1156172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10000 (or 9998 counting only the distinct ones).

The product of its digits is 420, while the sum is 23.

The square root of 1156172 is about 1075.2543885053. The cubic root of 1156172 is about 104.9560511462.

The spelling of 1156172 in words is "one million, one hundred fifty-six thousand, one hundred seventy-two".