11857545 has 24 divisors (see below), whose sum is σ = 23489856. Its totient is φ = 5420448.

The previous prime is 11857543. The next prime is 11857589. The reversal of 11857545 is 54575811.

It is not a de Polignac number, because 11857545 - 2¹ = 11857543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11857543) 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 in 23 ways as a sum of consecutive naturals, for example, 18507 + ... + 19136.

It is an arithmetic number, because the mean of its divisors is an integer number (978744).

Almost surely, 2^11857545 is an apocalyptic number.

11857545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11857545 is a deficient number, since it is larger than the sum of its proper divisors (11632311).

11857545 is a wasteful number, since it uses less digits than its factorization.

11857545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37661 (or 37658 counting only the distinct ones).

The product of its digits is 28000, while the sum is 36.

The square root of 11857545 is about 3443.4786190711. The cubic root of 11857545 is about 228.0332938453.

The spelling of 11857545 in words is "eleven million, eight hundred fifty-seven thousand, five hundred forty-five".