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82053551 = 831516547
BaseRepresentation
bin1001110010000…
…00100110101111
312201101202022102
410321000212233
5132001203201
612050405315
72014305116
oct471004657
9181352272
1082053551
1142354058
122359083b
1313ccbcc8
14ac7cc7d
15730c26b
hex4e409af

82053551 has 8 divisors (see below), whose sum is σ = 83604864. Its totient is φ = 80515800.

The previous prime is 82053539. The next prime is 82053583. The reversal of 82053551 is 15535028.

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 82053551 - 210 = 82052527 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 (82053451) 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, 9260 + ... + 15806.

It is an arithmetic number, because the mean of its divisors is an integer number (10450608).

Almost surely, 282053551 is an apocalyptic number.

82053551 is a deficient number, since it is larger than the sum of its proper divisors (1551313).

82053551 is a wasteful number, since it uses less digits than its factorization.

82053551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6781.

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 82053551 is about 9058.3415148690. The cubic root of 82053551 is about 434.5427017074.

Adding to 82053551 its reverse (15535028), we get a palindrome (97588579).

The spelling of 82053551 in words is "eighty-two million, fifty-three thousand, five hundred fifty-one".

Divisors: 1 83 151 6547 12533 543401 988597 82053551