1171457 has 8 divisors (see below), whose sum is σ = 1375296. Its totient is φ = 976752.

The previous prime is 1171451. The next prime is 1171463. The reversal of 1171457 is 7541711.

It is an interprime number because it is at equal distance from previous prime (1171451) and next prime (1171463).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1171457 - 2⁶ = 1171393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1171451) 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, 2003 + ... + 2520.

It is an arithmetic number, because the mean of its divisors is an integer number (171912).

It is a Proth number, since it is equal to 143 ⋅ 2¹³ + 1 and 143 < 2¹³.

2^1171457 is an apocalyptic number.

It is an amenable number.

1171457 is a deficient number, since it is larger than the sum of its proper divisors (203839).

1171457 is an equidigital number, since it uses as much as digits as its factorization.

1171457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4567.

The product of its digits is 980, while the sum is 26.

The square root of 1171457 is about 1082.3386715811. The cubic root of 1171457 is about 105.4165463883.

The spelling of 1171457 in words is "one million, one hundred seventy-one thousand, four hundred fifty-seven".