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55218058 = 2719791993
BaseRepresentation
bin1101001010100…
…0111110001010
310211220100221021
43102220332022
5103113434213
65251303054
71240226410
oct322507612
9124810837
1055218058
1129195165
12165aaa8a
13b59450c
1474952b0
154caad8d
hex34a8f8a

55218058 has 16 divisors (see below), whose sum is σ = 94754880. Its totient is φ = 23641056.

The previous prime is 55218029. The next prime is 55218061. The reversal of 55218058 is 85081255.

It is a happy number.

55218058 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×552180583 (a number of 24 digits) contains 333 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 26710 + ... + 28702.

It is an arithmetic number, because the mean of its divisors is an integer number (5922180).

Almost surely, 255218058 is an apocalyptic number.

55218058 is a deficient number, since it is larger than the sum of its proper divisors (39536822).

55218058 is a wasteful number, since it uses less digits than its factorization.

55218058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3981.

The product of its (nonzero) digits is 16000, while the sum is 34.

The square root of 55218058 is about 7430.8854115778. The cubic root of 55218058 is about 380.7971677063.

The spelling of 55218058 in words is "fifty-five million, two hundred eighteen thousand, fifty-eight".

Divisors: 1 2 7 14 1979 1993 3958 3986 13853 13951 27706 27902 3944147 7888294 27609029 55218058