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64211051 = 197147599
BaseRepresentation
bin1111010011110…
…0100001101011
311110211021000002
43310330201223
5112414223201
610212133215
71406533142
oct364744153
9143737002
1064211051
1133277793
121960720b
13103c2908
148756759
15598576b
hex3d3c86b

64211051 has 8 divisors (see below), whose sum is σ = 68544000. Its totient is φ = 59973480.

The previous prime is 64211047. The next prime is 64211087. The reversal of 64211051 is 15011246.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64211051 - 22 = 64211047 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64211351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22451 + ... + 25148.

It is an arithmetic number, because the mean of its divisors is an integer number (8568000).

Almost surely, 264211051 is an apocalyptic number.

64211051 is a deficient number, since it is larger than the sum of its proper divisors (4332949).

64211051 is a wasteful number, since it uses less digits than its factorization.

64211051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47689.

The product of its (nonzero) digits is 240, while the sum is 20.

The square root of 64211051 is about 8013.1798307538. The cubic root of 64211051 is about 400.4392071495.

Adding to 64211051 its reverse (15011246), we get a palindrome (79222297).

The spelling of 64211051 in words is "sixty-four million, two hundred eleven thousand, fifty-one".

Divisors: 1 19 71 1349 47599 904381 3379529 64211051