1163557 has 2 divisors, whose sum is σ = 1163558. Its totient is φ = 1163556.

The previous prime is 1163551. The next prime is 1163581. The reversal of 1163557 is 7553611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 982081 + 181476 = 991^2 + 426^2 .

It is a cyclic number.

It is not a de Polignac number, because 1163557 - 2¹¹ = 1161509 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1163551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 581778 + 581779.

It is an arithmetic number, because the mean of its divisors is an integer number (581779).

2^1163557 is an apocalyptic number.

It is an amenable number.

1163557 is a deficient number, since it is larger than the sum of its proper divisors (1).

1163557 is an equidigital number, since it uses as much as digits as its factorization.

1163557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3150, while the sum is 28.

The square root of 1163557 is about 1078.6829932839. The cubic root of 1163557 is about 105.1790444846.

The spelling of 1163557 in words is "one million, one hundred sixty-three thousand, five hundred fifty-seven".