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55060140 = 2235917669
BaseRepresentation
bin1101001000001…
…0011010101100
310211121100022110
43102002122230
5103043411030
65244044020
71236001122
oct322023254
9124540273
1055060140
1129097553
1216533610
13b53a685
147453912
154c791b0
hex34826ac

55060140 has 24 divisors (see below), whose sum is σ = 154168560. Its totient is φ = 14682688.

The previous prime is 55060133. The next prime is 55060141. The reversal of 55060140 is 4106055.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (55060141) 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 7 ways as a sum of consecutive naturals, for example, 458775 + ... + 458894.

It is an arithmetic number, because the mean of its divisors is an integer number (6423690).

Almost surely, 255060140 is an apocalyptic number.

It is an amenable number.

55060140 is an abundant number, since it is smaller than the sum of its proper divisors (99108420).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55060140 is a wasteful number, since it uses less digits than its factorization.

55060140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 917681 (or 917679 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 55060140 is about 7420.2520172835. The cubic root of 55060140 is about 380.4338074400.

Adding to 55060140 its reverse (4106055), we get a palindrome (59166195).

The spelling of 55060140 in words is "fifty-five million, sixty thousand, one hundred forty".

Divisors: 1 2 3 4 5 6 10 12 15 20 30 60 917669 1835338 2753007 3670676 4588345 5506014 9176690 11012028 13765035 18353380 27530070 55060140