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64052971 = 193371209
BaseRepresentation
bin1111010001010…
…1111011101011
311110112020011021
43310111323223
5112344143341
610204513311
71405304233
oct364257353
9143466137
1064052971
1133179a44
121954b837
1310368988
148714cc3
1559539d1
hex3d15eeb

64052971 has 4 divisors (see below), whose sum is σ = 67424200. Its totient is φ = 60681744.

The previous prime is 64052951. The next prime is 64052977. The reversal of 64052971 is 17925046.

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

It is not a de Polignac number, because 64052971 - 25 = 64052939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64052977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1685586 + ... + 1685623.

It is an arithmetic number, because the mean of its divisors is an integer number (16856050).

Almost surely, 264052971 is an apocalyptic number.

64052971 is a deficient number, since it is larger than the sum of its proper divisors (3371229).

64052971 is a wasteful number, since it uses less digits than its factorization.

64052971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3371228.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 64052971 is about 8003.3100027426. The cubic root of 64052971 is about 400.1103258177.

The spelling of 64052971 in words is "sixty-four million, fifty-two thousand, nine hundred seventy-one".

Divisors: 1 19 3371209 64052971