1156057 has 6 divisors (see below), whose sum is σ = 1344858. Its totient is φ = 990864.

The previous prime is 1156039. The next prime is 1156073. The reversal of 1156057 is 7506511.

It can be written as a sum of positive squares in only one way, i.e., 741321 + 414736 = 861^2 + 644^2 .

It is not a de Polignac number, because 1156057 - 2⁷ = 1155929 is a prime.

It is a Duffinian number.

1156057 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1156037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11748 + ... + 11845.

It is an arithmetic number, because the mean of its divisors is an integer number (224143).

2^1156057 is an apocalyptic number.

It is an amenable number.

1156057 is a deficient number, since it is larger than the sum of its proper divisors (188801).

1156057 is an equidigital number, since it uses as much as digits as its factorization.

1156057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23607 (or 23600 counting only the distinct ones).

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 1156057 is about 1075.2009114579. The cubic root of 1156057 is about 104.9525711721.

The spelling of 1156057 in words is "one million, one hundred fifty-six thousand, fifty-seven".