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53125149 = 3711229979
BaseRepresentation
bin1100101010101…
…0000000011101
310200222001000010
43022222000131
5102100001044
65134353433
71213361550
oct312520035
9120861003
1053125149
1127a95790
121595b879
13b0109cc
1470ac697
1549e5bb9
hex32aa01d

53125149 has 16 divisors (see below), whose sum is σ = 88312320. Its totient is φ = 27597360.

The previous prime is 53125139. The next prime is 53125151. The reversal of 53125149 is 94152135.

It is not a de Polignac number, because 53125149 - 25 = 53125117 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53125139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114759 + ... + 115220.

It is an arithmetic number, because the mean of its divisors is an integer number (5519520).

Almost surely, 253125149 is an apocalyptic number.

It is an amenable number.

53125149 is a deficient number, since it is larger than the sum of its proper divisors (35187171).

53125149 is a wasteful number, since it uses less digits than its factorization.

53125149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230000.

The product of its digits is 5400, while the sum is 30.

The square root of 53125149 is about 7288.7000898651. The cubic root of 53125149 is about 375.9240005027.

The spelling of 53125149 in words is "fifty-three million, one hundred twenty-five thousand, one hundred forty-nine".

Divisors: 1 3 7 11 21 33 77 231 229979 689937 1609853 2529769 4829559 7589307 17708383 53125149