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54820053 = 3217358301
BaseRepresentation
bin1101000100011…
…1110011010101
310211011010222100
43101013303111
5103013220203
65234552313
71233651141
oct321076325
9124133870
1054820053
1128a43132
1216438699
13b485302
1473d0221
154c2cea3
hex3447cd5

54820053 has 12 divisors (see below), whose sum is σ = 83842668. Its totient is φ = 34396800.

The previous prime is 54820033. The next prime is 54820057. The reversal of 54820053 is 35002845.

It can be written as a sum of positive squares in 2 ways, for example, as 45927729 + 8892324 = 6777^2 + 2982^2 .

It is not a de Polignac number, because 54820053 - 25 = 54820021 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 54819999 and 54820026.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54820057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 178998 + ... + 179303.

It is an arithmetic number, because the mean of its divisors is an integer number (6986889).

Almost surely, 254820053 is an apocalyptic number.

It is an amenable number.

54820053 is a deficient number, since it is larger than the sum of its proper divisors (29022615).

54820053 is a wasteful number, since it uses less digits than its factorization.

54820053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358324 (or 358321 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

The square root of 54820053 is about 7404.0565232851. The cubic root of 54820053 is about 379.8800475502.

Adding to 54820053 its reverse (35002845), we get a palindrome (89822898).

The spelling of 54820053 in words is "fifty-four million, eight hundred twenty thousand, fifty-three".

Divisors: 1 3 9 17 51 153 358301 1074903 3224709 6091117 18273351 54820053