1157071 has 8 divisors (see below), whose sum is σ = 1267920. Its totient is φ = 1051008.

The previous prime is 1157069. The next prime is 1157077. The reversal of 1157071 is 1707511.

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

It is not a de Polignac number, because 1157071 - 2¹ = 1157069 is a prime.

It is a Duffinian number.

1157071 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681 + ... + 1666.

It is an arithmetic number, because the mean of its divisors is an integer number (158490).

2^1157071 is an apocalyptic number.

1157071 is a deficient number, since it is larger than the sum of its proper divisors (110849).

1157071 is a wasteful number, since it uses less digits than its factorization.

1157071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2393.

The product of its (nonzero) digits is 245, while the sum is 22.

The square root of 1157071 is about 1075.6723478829. The cubic root of 1157071 is about 104.9832475163.

The spelling of 1157071 in words is "one million, one hundred fifty-seven thousand, seventy-one".