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65000053 = 491132383
BaseRepresentation
bin1111011111110…
…1001001110101
311112022100022101
43313331021311
5113120000203
610241102101
71416330346
oct367751165
9145270271
1065000053
1133766558
1219927931
131060aa91
1488c00cd
155a8e41d
hex3dfd275

65000053 has 4 divisors (see below), whose sum is σ = 65132928. Its totient is φ = 64867180.

The previous prime is 65000051. The next prime is 65000057. The reversal of 65000053 is 35000056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65000053 - 21 = 65000051 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 (65000051) 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, 65701 + ... + 66682.

It is an arithmetic number, because the mean of its divisors is an integer number (16283232).

Almost surely, 265000053 is an apocalyptic number.

It is an amenable number.

65000053 is a deficient number, since it is larger than the sum of its proper divisors (132875).

65000053 is a wasteful number, since it uses less digits than its factorization.

65000053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132874.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 65000053 is about 8062.2610352183. The cubic root of 65000053 is about 402.0726851401.

The spelling of 65000053 in words is "sixty-five million, fifty-three", and thus it is an aban number and an uban number.

Divisors: 1 491 132383 65000053