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54448261 = 721111189
BaseRepresentation
bin1100111110110…
…1000010000101
310210110020222021
43033231002011
5102414321021
65223003141
71230542200
oct317550205
9123406867
1054448261
112880986a
12162994b1
13b38500a
147334937
154ba7c41
hex33ed085

54448261 has 6 divisors (see below), whose sum is σ = 63337830. Its totient is φ = 46669896.

The previous prime is 54448253. The next prime is 54448279. The reversal of 54448261 is 16284445.

54448261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 52287361 + 2160900 = 7231^2 + 1470^2 .

It is not a de Polignac number, because 54448261 - 23 = 54448253 is a prime.

It is a super-2 number, since 2×544482612 = 5929226251848242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54448211) 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 5 ways as a sum of consecutive naturals, for example, 555546 + ... + 555643.

It is an arithmetic number, because the mean of its divisors is an integer number (10556305).

Almost surely, 254448261 is an apocalyptic number.

It is an amenable number.

54448261 is a deficient number, since it is larger than the sum of its proper divisors (8889569).

54448261 is a wasteful number, since it uses less digits than its factorization.

54448261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111203 (or 1111196 counting only the distinct ones).

The product of its digits is 30720, while the sum is 34.

The square root of 54448261 is about 7378.9064908020. The cubic root of 54448261 is about 379.0193110509.

The spelling of 54448261 in words is "fifty-four million, four hundred forty-eight thousand, two hundred sixty-one".

Divisors: 1 7 49 1111189 7778323 54448261