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55102033 = 719537817
BaseRepresentation
bin1101001000110…
…0101001010001
310211200110210001
43102030221101
5103101231113
65245010001
71236234220
oct322145121
9124613701
1055102033
1129115a78
1216553901
13b55376c
147464cb7
154c867dd
hex348ca51

55102033 has 16 divisors (see below), whose sum is σ = 67547520. Its totient is φ = 43894656.

The previous prime is 55102031. The next prime is 55102039. The reversal of 55102033 is 33020155.

It is a cyclic number.

It is not a de Polignac number, because 55102033 - 21 = 55102031 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55102033.

It is not an unprimeable number, because it can be changed into a prime (55102031) 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 15 ways as a sum of consecutive naturals, for example, 3141 + ... + 10957.

It is an arithmetic number, because the mean of its divisors is an integer number (4221720).

Almost surely, 255102033 is an apocalyptic number.

55102033 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

It is an amenable number.

55102033 is a deficient number, since it is larger than the sum of its proper divisors (12445487).

55102033 is a wasteful number, since it uses less digits than its factorization.

55102033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7896.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 55102033 is about 7423.0743630924. The cubic root of 55102033 is about 380.5302684681.

Adding to 55102033 its reverse (33020155), we get a palindrome (88122188).

The spelling of 55102033 in words is "fifty-five million, one hundred two thousand, thirty-three".

Divisors: 1 7 19 53 133 371 1007 7049 7817 54719 148523 414301 1039661 2900107 7871719 55102033