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55922139 = 3271368281
BaseRepresentation
bin1101010101010…
…0110111011011
310220020010202100
43111110313123
5103304002024
65314334443
71246221210
oct325246733
9126203670
1055922139
1129626149
121688a423
13b77cb30
1475d9b07
154d997c9
hex3554ddb

55922139 has 24 divisors (see below), whose sum is σ = 99418592. Its totient is φ = 29496960.

The previous prime is 55922137. The next prime is 55922143. The reversal of 55922139 is 93122955.

It is a happy number.

It is not a de Polignac number, because 55922139 - 21 = 55922137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55922137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33322 + ... + 34959.

Almost surely, 255922139 is an apocalyptic number.

55922139 is a deficient number, since it is larger than the sum of its proper divisors (43496453).

55922139 is a wasteful number, since it uses less digits than its factorization.

55922139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68307 (or 68304 counting only the distinct ones).

The product of its digits is 24300, while the sum is 36.

The square root of 55922139 is about 7478.1106571112. The cubic root of 55922139 is about 382.4088415343.

The spelling of 55922139 in words is "fifty-five million, nine hundred twenty-two thousand, one hundred thirty-nine".

Divisors: 1 3 7 9 13 21 39 63 91 117 273 819 68281 204843 477967 614529 887653 1433901 2662959 4301703 6213571 7988877 18640713 55922139