1157081 has 4 divisors (see below), whose sum is σ = 1218000. Its totient is φ = 1096164.

The previous prime is 1157077. The next prime is 1157099. The reversal of 1157081 is 1807511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1157081 - 2² = 1157077 is a prime.

It is a super-2 number, since 2×1157081² = 2677672881122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1157011) 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, 30431 + ... + 30468.

It is an arithmetic number, because the mean of its divisors is an integer number (304500).

2^1157081 is an apocalyptic number.

It is an amenable number.

1157081 is a deficient number, since it is larger than the sum of its proper divisors (60919).

1157081 is an equidigital number, since it uses as much as digits as its factorization.

1157081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60918.

The product of its (nonzero) digits is 280, while the sum is 23.

The square root of 1157081 is about 1075.6769961285. The cubic root of 1157081 is about 104.9835499551.

The spelling of 1157081 in words is "one million, one hundred fifty-seven thousand, eighty-one".