8821057 has 8 divisors (see below), whose sum is σ = 10195200. Its totient is φ = 7475424.

The previous prime is 8821049. The next prime is 8821067. The reversal of 8821057 is 7501288.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8821057 - 2³ = 8821049 is a prime.

It is a super-2 number, since 2×8821057² = 155622093194498, which contains 22 as substring.

It is a Duffinian number.

8821057 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8821067) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6457 + ... + 7702.

It is an arithmetic number, because the mean of its divisors is an integer number (1274400).

Almost surely, 2^8821057 is an apocalyptic number.

It is an amenable number.

8821057 is a deficient number, since it is larger than the sum of its proper divisors (1374143).

8821057 is a wasteful number, since it uses less digits than its factorization.

8821057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14255.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 8821057 is about 2970.0264308588. The cubic root of 8821057 is about 206.6205640602.

The spelling of 8821057 in words is "eight million, eight hundred twenty-one thousand, fifty-seven".