1111457 has 2 divisors, whose sum is σ = 1111458. Its totient is φ = 1111456.

The previous prime is 1111447. The next prime is 1111489. The reversal of 1111457 is 7541111.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 654481 + 456976 = 809^2 + 676^2 .

It is an emirp because it is prime and its reverse (7541111) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1111457 - 2⁶ = 1111393 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (1111427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555728 + 555729.

It is an arithmetic number, because the mean of its divisors is an integer number (555729).

2^1111457 is an apocalyptic number.

It is an amenable number.

1111457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111457 is an equidigital number, since it uses as much as digits as its factorization.

1111457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 140, while the sum is 20.

The square root of 1111457 is about 1054.2566101287. The cubic root of 1111457 is about 103.5851633221.

Adding to 1111457 its reverse (7541111), we get a palindrome (8652568).

The spelling of 1111457 in words is "one million, one hundred eleven thousand, four hundred fifty-seven".