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56818097 = 721768209
BaseRepresentation
bin1101100010111…
…1100110110001
310221220122202222
43120233212301
5104021134342
65345450425
71256642300
oct330574661
9127818688
1056818097
112a088306
1217040a15
13ba0489b
147790437
154ec4ed2
hex362f9b1

56818097 has 12 divisors (see below), whose sum is σ = 69983460. Its totient is φ = 45835776.

The previous prime is 56818061. The next prime is 56818123. The reversal of 56818097 is 79081865.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 35988001 + 20830096 = 5999^2 + 4564^2 .

It is not a de Polignac number, because 56818097 - 212 = 56814001 is a prime.

It is a super-2 number, since 2×568180972 = 6456592293402818, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56818297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33272 + ... + 34937.

It is an arithmetic number, because the mean of its divisors is an integer number (5831955).

Almost surely, 256818097 is an apocalyptic number.

It is an amenable number.

56818097 is a deficient number, since it is larger than the sum of its proper divisors (13165363).

56818097 is a wasteful number, since it uses less digits than its factorization.

56818097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68240 (or 68233 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 56818097 is about 7537.7779882403. Note that the first 3 decimals coincide. The cubic root of 56818097 is about 384.4402886166.

The spelling of 56818097 in words is "fifty-six million, eight hundred eighteen thousand, ninety-seven".

Divisors: 1 7 17 49 119 833 68209 477463 1159553 3342241 8116871 56818097