10243557 has 8 divisors (see below), whose sum is σ = 15175680. Its totient is φ = 6829020.

The previous prime is 10243553. The next prime is 10243559. The reversal of 10243557 is 75534201.

It is a happy number.

10243557 is a `hidden beast` number, since 102 + 4 + 3 + 557 = 666.

It is not a de Polignac number, because 10243557 - 2² = 10243553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 379391 = 10243557 / (1 + 0 + 2 + 4 + 3 + 5 + 5 + 7).

It is a self number, because there is not a number n which added to its sum of digits gives 10243557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10243553) 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 7 ways as a sum of consecutive naturals, for example, 189669 + ... + 189722.

It is an arithmetic number, because the mean of its divisors is an integer number (1896960).

Almost surely, 2^10243557 is an apocalyptic number.

It is an amenable number.

10243557 is a deficient number, since it is larger than the sum of its proper divisors (4932123).

10243557 is an equidigital number, since it uses as much as digits as its factorization.

10243557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379400 (or 379394 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 10243557 is about 3200.5557329939. Note that the first 3 decimals coincide. The cubic root of 10243557 is about 217.1785501238.

Adding to 10243557 its reverse (75534201), we get a palindrome (85777758).

The spelling of 10243557 in words is "ten million, two hundred forty-three thousand, five hundred fifty-seven".