1172097 has 8 divisors (see below), whose sum is σ = 1736480. Its totient is φ = 781380.

The previous prime is 1172081. The next prime is 1172107. The reversal of 1172097 is 7902711.

It is not a de Polignac number, because 1172097 - 2⁴ = 1172081 is a prime.

It is a super-2 number, since 2×1172097² = 2747622754818, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 43411 = 1172097 / (1 + 1 + 7 + 2 + 0 + 9 + 7).

It is a Duffinian number.

1172097 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1172097.

It is not an unprimeable number, because it can be changed into a prime (1172027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21679 + ... + 21732.

It is an arithmetic number, because the mean of its divisors is an integer number (217060).

2^1172097 is an apocalyptic number.

It is an amenable number.

1172097 is a deficient number, since it is larger than the sum of its proper divisors (564383).

1172097 is an equidigital number, since it uses as much as digits as its factorization.

1172097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43420 (or 43414 counting only the distinct ones).

The product of its (nonzero) digits is 882, while the sum is 27.

The square root of 1172097 is about 1082.6342872826. The cubic root of 1172097 is about 105.4357402375.

Subtracting from 1172097 its product of nonzero digits (882), we obtain a triangular number (1171215 = T₁₅₃₀).

The spelling of 1172097 in words is "one million, one hundred seventy-two thousand, ninety-seven".