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80755525 = 52171391367
BaseRepresentation
bin1001101000000…
…11101101000101
312121221210202101
410310003231011
5131133134100
612002512101
72000260564
oct464035505
9177853671
1080755525
1141647904
1223065631
1313966246
14aa21bdb
15715286a
hex4d03b45

80755525 has 24 divisors (see below), whose sum is σ = 106868160. Its totient is φ = 60322560.

The previous prime is 80755523. The next prime is 80755537. The reversal of 80755525 is 52555708.

It is not a de Polignac number, because 80755525 - 21 = 80755523 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80755523) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58392 + ... + 59758.

It is an arithmetic number, because the mean of its divisors is an integer number (4452840).

Almost surely, 280755525 is an apocalyptic number.

80755525 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

80755525 is a deficient number, since it is larger than the sum of its proper divisors (26112635).

80755525 is a wasteful number, since it uses less digits than its factorization.

80755525 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1533 (or 1528 counting only the distinct ones).

The product of its (nonzero) digits is 70000, while the sum is 37.

The square root of 80755525 is about 8986.4077917709. The cubic root of 80755525 is about 432.2391312232.

The spelling of 80755525 in words is "eighty million, seven hundred fifty-five thousand, five hundred twenty-five".

Divisors: 1 5 17 25 85 139 425 695 1367 2363 3475 6835 11815 23239 34175 59075 116195 190013 580975 950065 3230221 4750325 16151105 80755525