11145557 has 16 divisors (see below), whose sum is σ = 12291840. Its totient is φ = 10063872.

The previous prime is 11145551. The next prime is 11145569. The reversal of 11145557 is 75554111.

It is a cyclic number.

It is not a de Polignac number, because 11145557 - 2¹⁰ = 11144533 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a zygodrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11145551) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57653 + ... + 57845.

It is an arithmetic number, because the mean of its divisors is an integer number (768240).

Almost surely, 2^11145557 is an apocalyptic number.

11145557 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

11145557 is a deficient number, since it is larger than the sum of its proper divisors (1146283).

11145557 is a wasteful number, since it uses less digits than its factorization.

11145557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 332.

The product of its digits is 3500, while the sum is 29.

The square root of 11145557 is about 3338.4962183594. The cubic root of 11145557 is about 223.3746709453.

Adding to 11145557 its reverse (75554111), we get a palindrome (86699668).

The spelling of 11145557 in words is "eleven million, one hundred forty-five thousand, five hundred fifty-seven".