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68332051 = 405716843
BaseRepresentation
bin1000001001010…
…10101000010011
311202120121221201
410010222220103
5114443111201
610440332031
71456545544
oct404525023
9152517851
1068332051
1135631977
121aa74017
1311206588
14910a4cb
155eeb801
hex412aa13

68332051 has 4 divisors (see below), whose sum is σ = 68352952. Its totient is φ = 68311152.

The previous prime is 68332049. The next prime is 68332063. The reversal of 68332051 is 15023386.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68332051 - 21 = 68332049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68332001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4365 + ... + 12478.

It is an arithmetic number, because the mean of its divisors is an integer number (17088238).

Almost surely, 268332051 is an apocalyptic number.

68332051 is a deficient number, since it is larger than the sum of its proper divisors (20901).

68332051 is a wasteful number, since it uses less digits than its factorization.

68332051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20900.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 68332051 is about 8266.3202817215. The cubic root of 68332051 is about 408.8288031190.

The spelling of 68332051 in words is "sixty-eight million, three hundred thirty-two thousand, fifty-one".

Divisors: 1 4057 16843 68332051