1113557 has 2 divisors, whose sum is σ = 1113558. Its totient is φ = 1113556.

The previous prime is 1113527. The next prime is 1113569. The reversal of 1113557 is 7553111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1002001 + 111556 = 1001^2 + 334^2 .

It is a cyclic number.

It is not a de Polignac number, because 1113557 - 2¹⁸ = 851413 is a prime.

It is a Chen prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1113527) 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 as a sum of consecutive naturals, namely, 556778 + 556779.

It is an arithmetic number, because the mean of its divisors is an integer number (556779).

2^1113557 is an apocalyptic number.

It is an amenable number.

1113557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1113557 is an equidigital number, since it uses as much as digits as its factorization.

1113557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 525, while the sum is 23.

The square root of 1113557 is about 1055.2521025802. The cubic root of 1113557 is about 103.6503606220.

Adding to 1113557 its reverse (7553111), we get a palindrome (8666668).

It can be divided in two parts, 1113 and 557, that multiplied together give a triangular number (619941 = T₁₁₁₃).

The spelling of 1113557 in words is "one million, one hundred thirteen thousand, five hundred fifty-seven".