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55315099 = 719478849
BaseRepresentation
bin1101001100000…
…0101010011011
310212002022001101
43103000222123
5103130040344
65253332231
71241112340
oct323005233
9125068041
1055315099
1129251064
1216637077
13b5c9738
1474bc7c7
154cc99d4
hex34c0a9b

55315099 has 16 divisors (see below), whose sum is σ = 67968000. Its totient is φ = 43956864.

The previous prime is 55315087. The next prime is 55315103. The reversal of 55315099 is 99051355.

It is not a de Polignac number, because 55315099 - 211 = 55313051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55315019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1827 + ... + 10675.

It is an arithmetic number, because the mean of its divisors is an integer number (4248000).

Almost surely, 255315099 is an apocalyptic number.

55315099 is a deficient number, since it is larger than the sum of its proper divisors (12652901).

55315099 is a wasteful number, since it uses less digits than its factorization.

55315099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8922.

The product of its (nonzero) digits is 30375, while the sum is 37.

The square root of 55315099 is about 7437.4121171278. The cubic root of 55315099 is about 381.0201099417.

The spelling of 55315099 in words is "fifty-five million, three hundred fifteen thousand, ninety-nine".

Divisors: 1 7 19 47 133 329 893 6251 8849 61943 168131 415903 1176917 2911321 7902157 55315099