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54672137 = 134205549
BaseRepresentation
bin1101000010001…
…1101100001001
310210212122001222
43100203230021
5102444002022
65231451425
71232463662
oct320435411
9123778058
1054672137
1128951a93
1216386b75
13b432ba0
147392369
154bee242
hex3423b09

54672137 has 4 divisors (see below), whose sum is σ = 58877700. Its totient is φ = 50466576.

The previous prime is 54672133. The next prime is 54672151. The reversal of 54672137 is 73127645.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73127645 = 514625529.

It can be written as a sum of positive squares in 2 ways, for example, as 28344976 + 26327161 = 5324^2 + 5131^2 .

It is a cyclic number.

It is not a de Polignac number, because 54672137 - 22 = 54672133 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 54672097 and 54672106.

It is not an unprimeable number, because it can be changed into a prime (54672133) 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 3 ways as a sum of consecutive naturals, for example, 2102762 + ... + 2102787.

It is an arithmetic number, because the mean of its divisors is an integer number (14719425).

Almost surely, 254672137 is an apocalyptic number.

It is an amenable number.

54672137 is a deficient number, since it is larger than the sum of its proper divisors (4205563).

54672137 is a wasteful number, since it uses less digits than its factorization.

54672137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4205562.

The product of its digits is 35280, while the sum is 35.

The square root of 54672137 is about 7394.0609275283. The cubic root of 54672137 is about 379.5380744479.

The spelling of 54672137 in words is "fifty-four million, six hundred seventy-two thousand, one hundred thirty-seven".

Divisors: 1 13 4205549 54672137