11385557 has 2 divisors, whose sum is σ = 11385558. Its totient is φ = 11385556.

The previous prime is 11385553. The next prime is 11385613. The reversal of 11385557 is 75558311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11383876 + 1681 = 3374^2 + 41^2 .

It is a cyclic number.

It is not a de Polignac number, because 11385557 - 2² = 11385553 is a prime.

It is a nialpdrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11385553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5692778 + 5692779.

It is an arithmetic number, because the mean of its divisors is an integer number (5692779).

Almost surely, 2^11385557 is an apocalyptic number.

It is an amenable number.

11385557 is a deficient number, since it is larger than the sum of its proper divisors (1).

11385557 is an equidigital number, since it uses as much as digits as its factorization.

11385557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21000, while the sum is 35.

The square root of 11385557 is about 3374.2491016521. The cubic root of 11385557 is about 224.9666255024.

The spelling of 11385557 in words is "eleven million, three hundred eighty-five thousand, five hundred fifty-seven".