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53064749 = 232307163
BaseRepresentation
bin1100101001101…
…1010000101101
310200211222011002
43022123100231
5102041032444
65133210045
71213020503
oct312332055
9120758132
1053064749
1127a54371
1215930925
13acbc37a
147094673
1549d2d4e
hex329b42d

53064749 has 4 divisors (see below), whose sum is σ = 55371936. Its totient is φ = 50757564.

The previous prime is 53064719. The next prime is 53064763. The reversal of 53064749 is 94746035.

53064749 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 53064749 - 28 = 53064493 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 (53064719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1153559 + ... + 1153604.

It is an arithmetic number, because the mean of its divisors is an integer number (13842984).

Almost surely, 253064749 is an apocalyptic number.

It is an amenable number.

53064749 is a deficient number, since it is larger than the sum of its proper divisors (2307187).

53064749 is a wasteful number, since it uses less digits than its factorization.

53064749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2307186.

The product of its (nonzero) digits is 90720, while the sum is 38.

The square root of 53064749 is about 7284.5555114914. Note that the first 4 decimals coincide. The cubic root of 53064749 is about 375.7814790508.

The spelling of 53064749 in words is "fifty-three million, sixty-four thousand, seven hundred forty-nine".

Divisors: 1 23 2307163 53064749