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8213057 = 171792699
BaseRepresentation
bin11111010101001001000001
3120110021012022
4133111021001
54100304212
6452011225
7126544526
oct37251101
916407168
108213057
1146aa656
122900b15
1319173c8
14113b14d
15ac3772
hex7d5241

8213057 has 8 divisors (see below), whose sum is σ = 8748000. Its totient is φ = 7683904.

The previous prime is 8213053. The next prime is 8213059. The reversal of 8213057 is 7503128.

8213057 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 8213057 - 22 = 8213053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8213053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1694 + ... + 4392.

It is an arithmetic number, because the mean of its divisors is an integer number (1093500).

Almost surely, 28213057 is an apocalyptic number.

It is an amenable number.

8213057 is a deficient number, since it is larger than the sum of its proper divisors (534943).

8213057 is a wasteful number, since it uses less digits than its factorization.

8213057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2895.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 8213057 is about 2865.8431569086. The cubic root of 8213057 is about 201.7599425835.

The spelling of 8213057 in words is "eight million, two hundred thirteen thousand, fifty-seven".

Divisors: 1 17 179 2699 3043 45883 483121 8213057