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54577657 = 149366293
BaseRepresentation
bin1101000000110…
…0100111111001
310210200211110201
43100030213321
5102432441112
65225442201
71231621351
oct320144771
9123624421
1054577657
1128898002
1216340361
13b3cbb94
147369b61
154bd1257
hex340c9f9

54577657 has 4 divisors (see below), whose sum is σ = 54944100. Its totient is φ = 54211216.

The previous prime is 54577619. The next prime is 54577661. The reversal of 54577657 is 75677545.

54577657 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 an emirpimes, since its reverse is a distinct semiprime: 75677545 = 515135509.

It can be written as a sum of positive squares in 2 ways, for example, as 8934121 + 45643536 = 2989^2 + 6756^2 .

It is a cyclic number.

It is not a de Polignac number, because 54577657 - 219 = 54053369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54577697) 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, 182998 + ... + 183295.

It is an arithmetic number, because the mean of its divisors is an integer number (13736025).

Almost surely, 254577657 is an apocalyptic number.

It is an amenable number.

54577657 is a deficient number, since it is larger than the sum of its proper divisors (366443).

54577657 is a wasteful number, since it uses less digits than its factorization.

54577657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366442.

The product of its digits is 1029000, while the sum is 46.

The square root of 54577657 is about 7387.6692535603. The cubic root of 54577657 is about 379.3193193063.

The spelling of 54577657 in words is "fifty-four million, five hundred seventy-seven thousand, six hundred fifty-seven".

Divisors: 1 149 366293 54577657