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54390213 = 3231383509
BaseRepresentation
bin1100111101111…
…0110111000101
310210100022100100
43033132313011
5102410441323
65221434313
71230211023
oct317366705
9123308310
1054390213
112877a199
121626b999
13b364777
14731b713
154b95943
hex33dedc5

54390213 has 24 divisors (see below), whose sum is σ = 81469440. Its totient is φ = 34930080.

The previous prime is 54390197. The next prime is 54390221. The reversal of 54390213 is 31209345.

It is not a de Polignac number, because 54390213 - 24 = 54390197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54390263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106603 + ... + 107111.

It is an arithmetic number, because the mean of its divisors is an integer number (3394560).

Almost surely, 254390213 is an apocalyptic number.

It is an amenable number.

54390213 is a deficient number, since it is larger than the sum of its proper divisors (27079227).

54390213 is a wasteful number, since it uses less digits than its factorization.

54390213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 926 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 54390213 is about 7374.9720677437. The cubic root of 54390213 is about 378.8845706825.

Adding to 54390213 its reverse (31209345), we get a palindrome (85599558).

The spelling of 54390213 in words is "fifty-four million, three hundred ninety thousand, two hundred thirteen".

Divisors: 1 3 9 31 93 279 383 509 1149 1527 3447 4581 11873 15779 35619 47337 106857 142011 194947 584841 1754523 6043357 18130071 54390213