8857557 has 12 divisors (see below), whose sum is σ = 13235820. Its totient is φ = 5701248.

The previous prime is 8857543. The next prime is 8857621. The reversal of 8857557 is 7557588.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7322436 + 1535121 = 2706^2 + 1239^2 .

It is not a de Polignac number, because 8857557 - 2⁸ = 8857301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8857157) 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 11 ways as a sum of consecutive naturals, for example, 16708 + ... + 17229.

It is an arithmetic number, because the mean of its divisors is an integer number (1102985).

Almost surely, 2^8857557 is an apocalyptic number.

8857557 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

8857557 is a deficient number, since it is larger than the sum of its proper divisors (4378263).

8857557 is a wasteful number, since it uses less digits than its factorization.

8857557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33972 (or 33969 counting only the distinct ones).

The product of its digits is 392000, while the sum is 45.

The square root of 8857557 is about 2976.1648139846. The cubic root of 8857557 is about 206.9051585414.

The spelling of 8857557 in words is "eight million, eight hundred fifty-seven thousand, five hundred fifty-seven".