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54155930 = 2553102181
BaseRepresentation
bin1100111010010…
…1101010011010
310202220101222012
43032211222122
5102330442210
65212425522
71225214003
oct316455232
9122811865
1054155930
112862a174
12161782a2
13b2b1c3a
14729a1aa
154b4b305
hex33a5a9a

54155930 has 16 divisors (see below), whose sum is σ = 99320904. Its totient is φ = 21253440.

The previous prime is 54155921. The next prime is 54155939. The reversal of 54155930 is 3955145.

It is an interprime number because it is at equal distance from previous prime (54155921) and next prime (54155939).

It can be written as a sum of positive squares in 4 ways, for example, as 33097009 + 21058921 = 5753^2 + 4589^2 .

It is not an unprimeable number, because it can be changed into a prime (54155939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50561 + ... + 51620.

Almost surely, 254155930 is an apocalyptic number.

54155930 is a deficient number, since it is larger than the sum of its proper divisors (45164974).

54155930 is a wasteful number, since it uses less digits than its factorization.

54155930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102241.

The product of its (nonzero) digits is 13500, while the sum is 32.

The square root of 54155930 is about 7359.0712729257. The cubic root of 54155930 is about 378.3397792162.

The spelling of 54155930 in words is "fifty-four million, one hundred fifty-five thousand, nine hundred thirty".

Divisors: 1 2 5 10 53 106 265 530 102181 204362 510905 1021810 5415593 10831186 27077965 54155930